---- Is _____ manager and _____ engineer to attend the meeting this afternoon?

---- I have no idea.

A．a; a

B．the; /

C．the; the

D．a; the

在给机动车辆投保时，不能单独承保的险种是（）。

A.第三者责任险

B.基本险

C.附加险

D.消费贷款险