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

A.Amount of subcontract

B.qualifications and abilities of sub-contractors

C.responsibilities and obligations of sub-contractors

D.the contents of the subcontract

对于抵押贷款的展期，银行应该( )。

A．为减少贷款的风险续签抵押合同

B．核查其抵押率是否控制在一定的标准内

C．要求借款人及时到有关部门办理续期登记手续

D．贷款展期的审批与贷款的审批不一样，实行统一审批制度

E．切实履行对抵押物跟踪检查制度