In this task you are given a small conversation between two persons and 4 options on how the conversation should continue. Your job is to choose the most reasonable option. The conversation and the options are separated by a newline character. Each dialogue in the conversation are separated by a comma. F and M indicate female and male, respectively.

Input: Consider Input: M: How much is the cap? ,F: 8 yuan for 1, 14 yuan for 2, and 18 yuan for 3. ,M: Then I'll take 3.
(A) F: 8 yuan, please. (B) F: OK. These four caps cost 18 yuan. (C) F: 14 yuan, please. (D) F: I am afraid I did not quite catch what you were saying. Please repeat it.

Output: D


Input: Consider Input: F: Hello, XYZ Accounting. ,M: Hello, could I speak to Brian Robinson, please? ,F: Mister Robinson is in a meeting right now. Can I put you through to his voicemail? ,M: No thanks, I'll try back later. I just have a couple of quick questions about my tax return.
(A) F: Oh, you are calling only to pay taxes. Maybe I can help you. (B) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) F: So you are calling only to get information from me, right? (D) F: Maybe I can give you the information that you need.

Output: D


Input: Consider Input: F: This place is different from the supermarket we're used to, isn't it? I don't come here very often because I think the prices are higher than those at supermarkets.
(A) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) M: You are right. The prices at supermarkets are lower, so I seldom go to the shop. (C) M: Well, the prices at supermarkets are lower, but I always go to the shop as well. (D) M: I know you don't like the owner of the shop, but you still go to the shop.


Output: B