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: F: Why do you like your college so much? ,M: Because it has great teachers and I like all my classmates, too. But most importantly, it's not expensive.
(A) F: Yes, classmates are always the main reason we like our college. (B) F: I understand. Your college won't cost you much, so you like studying there, even though your classmates aren't friendly. (C) F: Now you can be happy to take classes from great teachers. That was your dream. (D) F: I'm sorry, I didn't understand. Could you repeat a little louder, please?
Example Output: D

Example Input: F: How was your trip to New York? ,M: It was fun. I took the train there. ,F: I didn't know that a train went from Los Angeles to New York. ,M: Well, it doesn't go there directly. First, I took a train North from Southern California to Seattle Washington, then I transferred to another train, this one went across the northern part of the country, from Seattle all the way to Chicago, Illonois.
(A) F: Why did you choose to start your trip from Florida? (B) F: So you finished your trip in California, right? (C) F: I am really sorry, I did not catch that. Would you slow down, please? (D) F: I see. You started your trip from Washington.
Example Output:
C