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: Oh, there is nothing better than an ice cold glass of ice water on a hot day. ,M: You know, cold water always gives me stomachaches. ,F: Really? I've never had that problem. I've been drinking ice water since I was little. ,M: When I was a small boy, my grandmother never let my mom give me anything other than warm water. ,F: Even in the summer? ,M: Yes, every once in a while my dad would take me to get some ice cream, but my grandmother was never happy about that. I think it was the sugar that she didn't like.
(A) F: Your grandmother tell you to drink only cold water on hot days? (B) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (C) F: Drinking warm water in summer sounds healthy, but I can't do it. (D) F: You only have something other than water in summer, like ice cream.
Example Output: C

Example 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.
Example Output: C

Example Input: F: Are you going to take part in the school singing contest? ,M: No, I don't think so. ,F: Why not? You have a great voice and you sing at her local community center every Sunday, don't you? ,M: Thanks, well. Yes, I do sing at the community center, but that is with a whole bunch of other people. I get really nervous singing in front of many people just by myself.
(A) F: Why do you feel nervous about singing alone? You sing just by yourself every Sunday. (B) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (C) F: Sorry to know that you dislike singing, maybe you can try singing at the community center. (D) F: Though your voice is not great, I think it is acceptable. Why don't you like your voice?
Example Output:
B