--- I’ve been waiting for you for an hour! Where have you been?

--- ______. It’s rush hour now, you know. The traffic is too bad.

A．It doesn’t matter

B．Be careful

C．Sorry about that

D．What a pity

深圳证券交易所会员取得席位后，可根据业务需要向交易所申请设立()交易单元。

A.1个或1个以上

B.3个或3个以上

C.5个或5个以上

D.若干个