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: Everybody thought Jack could defeat his challenger in the game. ,M: I thought so, too. He seldom fails.
(A) F: But fortunately Jack won the game. (B) F: I didn’t hear you. Please could you tell me again? (C) F: But unfortunately Jack lost the game. (D) F: It seems that it was a draw.
Example Output: C

Example Input: M: Hi, miss. Could you tell me where Mr. Johnson's office is? ,F: Well, his office is on the twenty second floor, but the lift only goes to the eighteenth floor. So you'll have to walk the rest of the way. ,M: Thank you very much.
(A) F: You have to walk the rest three floors to get Mr. Johnson's office. His office is on the twenty second floor. (B) F: You have to walk the rest four floors to get Mr. Johnson's office. His office is on the twenty second floor. (C) F: You have to walk the rest three floors to get Mr. Johnson's office. His office is on the twenty third floor. (D) F: Excuse me, could you repeat the question?
Example Output: B

Example Input: M: You really have a good figure. How many sports do you do in your spare time? ,F: Quite a few. Walking, playing tennis, mountain climbing, yoga and some others. I like yoga best. ,M: Why do you like playing tennis? ,F: It's fun and good for developing coordination. ,M: What's mountain climbing good for? ,F: Many things, especially breathing.
(A) M: Since walking is good for breathing, I'll walk more in the future. (B) M: Oh, I just learned that playing tennis is good for breathing. (C) M: Yeah, mountain climbing is really good for breathing. (D) M: I’m sorry, I don’t understand. Could you say it again?
Example Output:
C