—What did the doctor say?   —He asked how long _________.

A．has my daughter caught a cold

B．had my daughter caught a cold

C．my daughter had caught a cold

D．my daughter had had a cold

代替客户承办交付和其他委托事项并收取手续费的业务是商业银行的（）

A.负债业务

B.中间业务

C.资产业务

D.租赁业务