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

当事人不服第一审判决的，有权在判决书送达之日起10日内向上一级人民法院提起上诉。()

A． 正确

B．错误