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: M: Have you decided whether to rent a room off campus next semester or still stay in the dormitory? ,F: We're still talking about that. Lissy's mom wants her to stay at home. ,M: You always hesitate in making decisions.
(A) F: Yes, although I am living in the dormitory this semester, I still can't decide where to live next semester. (B) F: Excuse me, could you repeat the question? (C) F: Why do you say that? Since I am living in the dormitory this semester, I have decided to live in the dormitory next semester. (D) F: Although I live at home this semester, I may not be able to next semester because Lissy's mother doesn't want her to live at home.
Example Output: A

Example Input: M: I need to go to the bank. ,F: But they're all close today? ,M: Closed? Are you kidding? What is it? Some kind of holiday today?
(A) F: Hey, calm down. Just joking, The post office is right behind you. (B) F: I am afraid I did not quite catch what you were saying. Please repeat it. (C) F: Hey, calm down. Just joking, there's no bank in the town. (D) F: Hey, calm down. Just joking, which bank do you want to go?
Example Output: D

Example Input: M: Have you read John Harrison's latest book Going Round The World? n ,F: No. How do you feel about it? ,M: Well, I laughed out loud all the way through, I want to read it again.
(A) F: It's scientific? Then I'll have a try. (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: It's only John's first book. His later books are more interesting than this one. (D) F: If the book is so interesting as you suggest, I would like to read it.
Example Output:
D