The thief was apprehended, but his accomplice had disappeared.

A．people who saw him

B．the person who helped him

C．guns and knives

D．stolen goods

《物业服务收费管理办法》规定，包干制是指由（）向物业服务企业支付固定物业服务费用，盈余或者亏损均由物业服务企业享有或者承担的物业服务计费方式。

A.业主委员成员

B.业主

C.业主大会成员

D.社区居委会