A、projECt mAnAgEr is working on A ComplEx projECt with pEoplE From ArounD thE worlD、thE projECt sChEDulE is sEt, But thE tAsks rEquirE DEtAilED intEgrAtion with othEr tAsks BEing DonE By thE BuyEr. whAt is thEBEst thing thE projECt mAnAgEr CoulD usE to Control this situAtion
A、work AuthorizAtion systE
B、ConFigurAtion mAnAgEmEn
C．historiCAl inFormAtio
D．ChAngE Control BoAr