单项选择题 Small， medium， and large businesses today are increasingly using "Green" products within their IT Environments.  What are the most significant factors propelling this change？（）

单项选择题 The customer requests a proposal for three high-availability 4-socket servers with the capability to connect to their existing DS4000 storage server. The customer will make the decision based on the lowest initial purchase price.  Which of the following IBM System x solutions would be the most competitive？（）

单项选择题 A customer is interested in a power efficient server solution. The Sales Specialist has recommended a BladeCenter solution. The customer debates the price is high compared to rack servers.  Which of the following should the Sales Specialist emphasize to address the pricing difference？（）