● Sub－contractors should obey the contractor in information system project. When censoring

● Sub-contractors should obey the contractor in information system project. When censoring sub-contractors, the supervisor mostly concerns about （73）.

（73）

A．Amount of subcontract

B．qualifications and abilities of sub-contractors

C．responsibilities and obligations of sub-contractors

D．the contents of the subcontract

请帮忙给出正确答案和分析，谢谢！