項(xiàng)目剛獲準(zhǔn)立項(xiàng)，項(xiàng)目發(fā)起人要求項(xiàng)目經(jīng)理對(duì)整個(gè)項(xiàng)目的成本進(jìn)行類比估算。公司一個(gè)季度前已經(jīng)完成了一個(gè)類似的項(xiàng)目。為了更好地進(jìn)行類比估算，項(xiàng)目經(jīng)理應(yīng)該( )
A．了解項(xiàng)目發(fā)起人愿意為項(xiàng)目花多少錢(qián)
B．查看項(xiàng)目范圍說(shuō)明書(shū)
C．查看商業(yè)論證
D．查看項(xiàng)目章程