You want someone to stop smoking in a no-smoking area. Please choose an appropriate response. ( )(本题3.5分)

A、 “Excuse me. I’m afraid smoking isn’t allowed here.”
B、 “I’m sorry but there’s someone over there that I have to talk to.”
C、 “How clumsy of me. I’m really sorry. ”
D、 “I’m terribly sorry to hear that. ”