whiCh oF thE Following woulD most likEly inCrEAsE thE ACCurACy oF EstimAting thE projECt Cost?
A. priCing out thE work At lowEr lEvEls in thE work BrEAkDown struCturE.来源：考试大
B. using historiCAl DAtA.
C. tAlking to pEoplE who hAvE workED on similAr projECts.
D. All oF thE ABovE.
E. A AnD C only.