The passage supplies information that would answer

单项选择题

Recent years have brought minority-owned businesses in the United States unprecedented opportunities as well as new and significant risks. Civil rights activists have long argued that one of the principal reasons why Blacks, Hispanics, and other minority groups have difficulty establishing themselves in business is that they lack access to the sizable orders and subcontracts that are generated by large companies. Now Congress, in apparent agreement, has required by law that businesses awarded federal contracts of more than $ 500, 000 do their best to find minority subcontractors and record their efforts to do so on forms filed with the government. Indeed, (some federal and local agencies) have gone so far as to set specific percentage goals for apportioning part of public works contracts to minority enterprises.
Corporate response appears to have been substantial. (According to figures collected in 1977, the total of corporate contracts with minority businesses rose from $ 77 million in 1972 to $1.1 billion in 1977. ) The projected total of corporate contracts with minority businesses for the early 1980s is estimated to be over $ 3 billion per year with no letup anticipated in the next decade.
Promising as it is for minority businesses, this increased patronage poses dangers for them, too. First, minority firms risk expanding too fast and overextending themselves financially, since most are small concerns and, unlike large businesses, they often need to make substantial investments in new plants, staff, equipment, and the like in order to perform work subcontracted to them. If, thereafter, their subcontracts are for some reason reduced, such firms can face potentially crippling fixed expenses. The world of corporate purchasing can be frustrating for small entrepreneurs who get requests for elaborate formal estimates and bids. Both consume valuable time and resources, and a small company’s efforts must soon result in orders, or both the morale and the financial health of the business will suffer.
A second risk is that White-owned companies may seek to cash in on the increasing apportionments through formation of joint ventures with minority-owned concerns. Of course, in many instances there are legitimate reasons for joint ventures; clearly, White and minority enterprises can team up to acquire business that neither could acquire alone. But civil rights groups and minority business owners have complained to Congress about minorities being set up as "fronts" with White backing, rather than being accepted as full partners in legitimate joint ventures.
Third, a minority enterprise that secures the business of one large corporate customer often run the danger of becoming and remaining dependent. Even in the best of circumstances, fierce competition from larger, more established companies makes it difficult for small concerns to broaden their customer bases: when such firms have nearly guaranteed orders from a single corporate benefactor, they may truly have to struggle against complacency arising from their current success.

The passage supplies information that would answer which of the following questions ______

A. Why federal agencies have set percentage goals for the use of minority-owned businesses in public works contracts
B. To which government agencies must businesses awarded federal contracts report their efforts to find minority subcontractors
C. How widespread is the use of minority-owned concerns as "fronts" by White backers seeking to obtain subcontracts
D. What is one set of conditions under which a small business might find itself financially overextended