在項(xiàng)目啟動(dòng)階段項(xiàng)目經(jīng)理對(duì)如何確定每個(gè)項(xiàng)目干系人在每個(gè)項(xiàng)目階段的參與程度沒有把握，制定干系人參與計(jì)劃時(shí)，項(xiàng)目經(jīng)理應(yīng)該怎么做?
A．應(yīng)用專家判斷
B．檢查項(xiàng)目章程
C．審查過往項(xiàng)目的經(jīng)驗(yàn)教訓(xùn)
D．咨詢項(xiàng)目發(fā)起人