单项选择题 You are working on the cost budget for one project. Which of the following is true（）

单项选择题 An activity has an early start date-of the lOth and a late start date of the 19th. The activity also has a duration of 4 days. There are no nonworkdays. From the information given, （）what can be concluded about the activity?

单项选择题 Project selection methods involve measuring value or attractiveness to the project owner or sponsor and may include other organizational decision criteria （）is not a project selection method.