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.

Ex 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.

Ex Output:
D

Ex Input:
M: What are you studying in college? ,F: My major is computer science. ,M: Is it difficult to learn computer science? ,F: No, it's a piece of cake, I think.
(A) M: I didn't hear you. Please could you tell me again? (B) M: Why do you think computer science is difficult? (C) M: Computer science is really easy. (D) M: Oh, your major is international trade.

Ex Output:
C

Ex Input:
M: Hi, Rachel, how are you? ,F: Don't ask. I've had a terrible morning. ,M: Oh no, what happened? ,F: It's my car. I came out of the house this morning and found that the back window had been broken into pieces. ,M: Oh no, that's awful. What were they after? The car's MP3 player? ,F: Yeah, I guess that might have been it. Because they did take that. It would have been OK if that had been all they got. But they got away with my handbag, too. I'd somehow stupidly managed to leave it on the back seat. ,M: Oh, no. Was there much in it? ,F: No, not really, but there was a spare set of keys in there and my home address. Fortunately, I took my new iPhone with me. ,M: Oh, that's terrible. That wasn't a very sensible place to leave your handbag. ,F: I know. I know. I was so worried that they'd come round and rob my flat that I called in a repairman and got my locks changed this morning. It cost me a fortune.
(A) M: I see. You went to the police this morning, so you didn't have time to change any lock. (B) M: Good to know nothing in car was stolen and the back window was repaired this morning. (C) M: Wow, you have changed your locks all by yourself this morning. That's cool of you. (D) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that?

Ex Output:
D