听力原文：M: Excuse me. Have you been waiting long？

W: About ten minutes.

M: Did you notice whether the No. 7 bus had passed by？

W: Not while I've been standing here. I'm also waiting for the No. 7 bus myself.

M: Good. Hot today, isn't it？

W: Yes, it is. I wish that it would rain and cool off.

M: Me too. This is unusual for March. I don't remember it ever being so hot and dry in March before.

W: You were born in Florida then？

M: No. I was born in New York, but I've lived here for ten years now.

W: My mother and I have just moved here from Indiana.

M: Pretty cold in Indiana, isn't it？

W: Yes. That's why we moved, but we didn't know that it would be so hot here. We should have gone to California. Do you think we've missed the bus？ I've been here for twenty minutes already.

M: Take it easy. It never comes exactly on the half-hour like it should.

Why is the woman waiting？

A．She is waiting for the man.

B．She is waiting for her mother.

C．She is waiting for a bus.