Which type of input is the primary cause of contract changes ？（）

单项选择题If a CV was positive and the SV was positive, what does this indicate ？（）

A．The project is over budget, but on schedules.
B．The project is under budget, but behind schedules.
C．The project is under budget, and ahead of schedules.
D．The project is on budget and on schedules.

单项选择题In schedule development, you create a distribution of probable results for each activity and use it to calculate distribution of probable results for the total project. The technique that you are using is （）.

A．what-if analysis
B．mathematical analysis
C．Monte carlo analysis
D．resource leveling heuristic