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".

[Q]: W: We have made ten copies. M: At first it's planned to need ten copies, and now we don't need so many. Five would be enough.
[A]: How many unnecessary copies they have made? (A) Five. (B) Four. (C) Six.

[Q]: W: It's ten o'clock. I'm going to have to be leaving. M: Leaving? Already? W: Yes. I've got to get up early tomorrow morning. M: OK. Stop over again sometime. W: Sure. Thank you very much for your dinner. See you then. M: See you then.
[A]: What time was it? (A) 10:00. (B) 11:00. (C) 9:00.

[Q]: W: Good morning, can I help you? M: Yes, please. I'd like to cash two traveler's cheques. W: Could you sign your name here please? M: Sure. W: Thank you. How would you like your money? M: In hundreds and fifties, please. W: Ok. It's 1,660 yuan, here you are. M: Thanks. May I know the exchange rate? W: Well, at the moment the exchange rate between US dollars and RMB is 1:8.3. You give me two $100 cheques; here is 1,660 yuan. Is that right? M: Yes, thanks.
[A]:
Where does the conversation most probably take place? (A) In a supermarket. (B) In a bank. (C) In an office.