单选题 Martha: Hello, it's Martha. Are you okay? I've just heard that you had a narrow escape when you went diving that day? Carter: ______ Martha: What happened? You are a very experienced diver, aren't you? Carter: Well, yes. But it was an accident.

A、 Who said that to you?
B、 Thanks, I'm okay.
C、 Don't mention it.
D、 I'd rather not talk about it.

【正确答案】 B

【答案解析】对Martha表示的关心，Carter的回答应该是B选项：“谢谢，我还好”。