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.

Example Input: F: What time is it, Steven? ,M: Uh, it's 7:30. Aren't you going to finish your breakfast? ,F: I don't have much time. I've got a lot to do downtown today. ,M: If you're coming into the city, we may have lunch together.
(A) F: Well, we are living in the center of the city, so since today we are going to the countryside, I think it will take a long time to go there. (B) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) F: That's awesome, but you know we are living out of the city, so perhaps I'll be late for a few minutes fot the aerobics class. (D) F: That's great, but you know we are living out of the city, so perhaps I'll be late for a few minutes.
Example Output: D

Example Input: F: How long have you been living in this city, Jack? ,M: Let me see. I came to this city when I was 23 years old. So 5 years now. ,F: Do you like living in the big city? ,M: Not so much. Air pollution has become such a big problem here now.
(A) F: I agree with you. Heavy traffic is a serious problem. (B) F: I agree with you. Air pollution is not a serious problem. (C) F: I am afraid I did not quite catch what you were saying. Please repeat it. (D) F: I agree with you. Air pollution should be paid more attention to.
Example Output: D

Example Input: F: Someone's just stolen my purse. I left it on this table when I went to the restroom. And when I came back, I saw this man running out of the cafe. He is about 17 with short brown hair and wears a black jacket. ,M: OK, madam. I'll call the police now. But I'm afraid we aren't responsible for your loss, although it took place here. ,F: I know.
(A) M: So I will put away the purse and try to clean it for you, OK? (B) M: OK. I'll call the police first. (C) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (D) M: OK. I'll call the police first and try to get your computer back as soon as possible.
Example Output:
B