A、Doctor and patient. B、Passenger and bus driver. C、Customer and merchant. D、Boss and secretary. B从"How much is the fare?"便可断定对话

M: Did I told you we’d found a house at last?
W: Have you? I thought you’d given up looking.
Q: When did the conversation take place?

M: Could you please tell me at which stop I should get off for the museum? And, how much is the tare?
W: I’ll tell you when we get there. The fare is thirty cents; just put it in the fare box.
Q: What is the probable relationship between these two people?