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: Welcome to the Hilton. ,F: I'd like to check in.
(A) M: No problem. Please show me your passport and flight ticket. Do remember not to bring anything which is forbidden by the customs. (B) M: No problem. There is your key to the hotel room. (C) M: No problem. I will book a table for you so that you can have your dinner at our restaurant. (D) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that?
Example Output: B

Example Input: F: Good morning. ,M: Morning. ,F: Come in. Sit down. Now, you're a new patient, aren't you? ,M: Yes, that's right. ,F: OK. So I better ask you some questions first. Now, have you ever had any serious illnesses or accidents? ,M: A broken leg I got from playing football when I was 17. I was in the school team at that time.
(A) F: I'm sorry that you got a broken leg from playing football. (B) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) F: I'm sorry that you got a broken arm from playing with a wild cat. (D) F: I'm sorry that you got a broken arm from a traffic accident.
Example Output: A

Example Input: F: Jack, what is your favorite subject? ,M: My favorite subject? Well, I think I prefer science. Yes, science, I find it very interesting. The science teacher makes the subject very exciting. What about you? ,F: I always do very well in the maths tests. I also like geography. I like learning about people and the places where they live. Are there any subjects that you don't like Jack? ,M: I don't like physics very much. It's not easy to understand, most of the children are bored with it.
(A) F: Right, physics is very interesting, but it hard to understand just like geography, so I don't like those subjects. (B) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (C) F: Well, that makes sense, but at least you like the geography, that subject is really interesting! (D) F: Yeah, you are right, I agree with you that the physics is really difficult to learn.
Example Output:
D