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: Why did you come to school by bike today? Is there anything wrong with your father's car? ,M: No, I just want to do what I can to protect the environment. ,F: That's a wonderful idea. I'll stop taking my father's car, too. ,M: That's great.
(A) F: Although your father's car broke down, we are students and this is what we should do. (B) F: As students, this is what we should do. (C) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) F: Since our son's car broke down, we should fix it as parents.

Ex Output:
B

Ex Input:
M: Guess what, the television isn't working again. ,F: I had it mended many times. It's really not cheap to have it fixed. Perhaps it needs replacing. ,M: Maybe we can sell it first. ,F: I agree.
(A) M: Why not buy a new one first? Maybe it doesn't need replacing. (B) M: I'm sorry, I didn't understand. Could you repeat a little louder, please? (C) M: Or we can keep it first. We may sell it in the future. (D) M: That's a good idea to sell the television first.

Ex Output:
D

Ex Input:
M: I heard you had a car accident. Did you get hurt? ,F: I'm alright, but it's going to cost me a fortune to get my car fixed. ,M: Why not buy a new one.
(A) F: I'm sorry, I don't understand. Could you say it again? (B) F: Why do you suggest that I should fix the car myself? I can't do it. (C) F: No. I would rather repair the old car than buy another one. (D) F: You are right. I would rather buy a new car than repair the old one.

Ex Output:
D