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

（）是项目干系人管理的主要目的

A、识别项目的所有潜在用户来确保完成项目总体设计 

B、避免项目干系人提出不一致的要求 

C、通过制订对项目干系人调查表来关注对项目的评价 

D、避免项目干系人在项目管理中出现严重分歧