[听力原文]
M: Sorry, I’m late, Mary. Have you been waiting long
W: Oh, no. I’ve been here a minute or two. I’ve been looking at the menu.

Where does the conversation probably take place（）

A．Because she was worried about the birthday party.
B．Because she found this history course very challenging.
C．Because she thought her term paper might be late.
D．Because she had a very hard time sleeping.

A．Customer and salesman.
B．Wife and husband.
C．Doctor and patient.
D．Teacher and student.