单项选择题

Including a contingency reserve in the project budget is intended to （）.

A．reduce the probability of scope changes
B．increase the probability of scope changes
C．reduce the probability of a cost overrun
D．increase the probability of a cost overrun

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单项选择题

A projeet team budgeted US $3,000 for the work performed and has spent US $4,000 to date. If they budgeted US $5, 000 for the work scheduled, what is the cost variance ？（）

A．$-1,000.
B．$2,000.
C．$1,000.
D．$-2,000.

单项选择题

Rebaselining may be required in cost control when （）.

A．CVs are severe, and a realistic measure of performance is needed
B．revised cost estimates are prepared and distributed to stakeholders
C．corrective action must be taken to bring expected future performance in line with the project plan
D．EAC shows that additional funds are needed to complete the project even if a scope change is not needed