In this task, you will be shown a conversation. You need to write a question with three choices for the conversation. Your question should be answerable based on the conversation and only have one correct answer. Note that you don't need to answer your question. "W" and "M" in the conversations stand for "woman" and "man".

M: What can I do for you, madam? W: I've lost my shoulder bag. M: Are you sure you have searched everywhere? W: Yes, I can't find it anywhere. M: Can you describe it to me? W: Yes, it is brown and has a large button at the front. M: What is it made of? W: It's made of leather. M: When did you last have it? W: I had it with me before I played table tennis on the chair. But after I came back from the rest room, it was not there any longer. M: What's in it? W: My purse with about 200 Yuan, my keys, my cell phone and an address book. M: Please leave me your name and telephone number so that we can inform you as soon as possible. W: Thanks a lot.
Where does the conversation take place? (A) In the library. (B) In a bag shop. (C) In a lost-and-found office.