During a presentation of project status information to the steering committee, an executive asks the project manager for an update on how the project is performing relative to its budget. What measure should the project manager report to the executive? 在向项目指导委员会提交项目状态信息时，一位高管要求项目经理提供项目相对于其预算的执行情况的更新，项目经理应该向该高管报告哪一个测量指标？ ◑A.Cost variance (CV)成本偏差（CV） ◑B. Cost performance index (CPI)成本绩效指数（CPI） ◑C.Actual cost (AC)实际成本（AC） ◑D.Earned value (EV)挣值（EV）
