Task: Dialogue Generation
Input (English): F: I saw a beautiful fish in the market the other day, it was orange and blue. I'm thinking of buying some next Sunday. ,M: Where would you keep them? ,F: In that round bottle over there. ,M: It's a bit small, isn't it? ,F: So are the fish. ,M: I think you should get a tank if you want to keep fish. ,F: Really? ,M: Yes, you should never keep fish in a small round bottle. They don't get enough air. I suggest we go shopping together and look for a nice tank. ,F: That might be quite expensive. ,M: Check the prices before you buy one and you ought to put a few large rocks in the tank. Fish love swimming around the rocks and through holes in them.
(A) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) F: Why do you say that I should keep fish in a small round bottle? Actually, at the beginning I plan to keep the fish in a nice new tank. (C) F: Thanks for your suggestion. At the beginning I plan to keep the fish in a nice new tank, because it might be very cheap. (D) F: Why do you say I can't put a few large rocks in the tank? At the beginning I plan to keep the fish in  the holes of some rocks.
Output (English): A