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: Is that you, Tom? Long time no see. What have you been doing all these years? ,M: Hi Lucy. I haven't seen you in a million years. I actually worked abroad for a few months and I've just returned from Canada. How are things with you? ,F: Everything is fine except that we have been missing you. ,M: We really need to get together sometime.
(A) F: How many years have you worked abroad? (B) F: Definitely! Let's make an appointment. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: Definitely! Let's make an appointment after I return from Canada.
Example Output: B

Example Input: F: I thought you were going to New York for your holiday. ,M: I was, but I decided to visit my uncle in Paris this time. I haven't seen him in years since he left London.
(A) F: Excuse me, could you repeat the question? (B) F: I really admire your uncle that he can live in London now. (C) F: I really admire you that you can study in Paris. (D) F: I really admire your uncle that he can live in Paris now.
Example Output: D

Example Input: F: What do you know about Einstein's childhood? ,M: He studied the violin between the age of 6 and 13. ,F: How was little Albert in primary school? ,M: Well, he was rather shy and couldn't get along with the other boys. He used to ask lots of questions. He did not enjoy school much. He was poor in all subjects, other than maths and science.
(A) F: Yes, indeed. He was a careless boy, but he was good at all subjects. (B) F: Shy? Are you kidding me? He was a boy who got along well with other boys. (C) F: Really? How did you know that he was naughty but good at all subjects? (D) F: I’m sorry, I don’t understand. Could you say it again?
Example Output:
D