Theearnedvaluetechniqueisacommonlyusedmethodofperformancemeasurement.Itintegratesprojectscope,cost,andschedulemeasurestohelptheprojectmanagementteamassessprojectperformance.Ifaproject’sSchedulePerformanceIndex(SPI=EV/PV)valuelessthan1.0,itmeansthat_().
A.the project is a head of its planned schedule B.less work was completed than was planned C.the cost overrun for work completed D.the cost under-run of performance to date正确答案B
