A、Policeman and policewoman. B、Bus driver and passenger. C、Policeman and witness. D、Policeman and victim. C旅行交通类，身份关系题。男士问女士看到车祸

W: I didn’t expect the dormitory to be so noisy. There must be something we could do about it.
M: Maybe we could request the dormitory council to have it soundproofed.
Q: What does the man suggest doing?

M: When you saw the accident, did you ring us immediately?
W: Yes. The first thing that struck me was to call the police.
Q: What is the probable relationship between the speakers?