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: Shirly, I'm working on our class diary for next week. Would you please give me the information? ,F: Sure. First is the deadline for after class activity application. The deadline is next Monday, June fourteenth. ,M: Monday, June fourteenth. ,F: Yes, then on Wednesday, that's the sixteenth, all classmates have to hand in three student photos. ,M: Three student photos. ,F: OK. Next is the basketball club meeting. It's on the seventeenth. ,M: The basketball club meeting on the seventeenth, and where will they meet? ,F: At the stadium. ,M: And at what time? ,F: From 12:45 to 1:30 PM. ,M: Right. ,F: Then the last thing is about filling in a form with up-to-date personal data. Our class needs to go to the computer room during the morning break on the eighteenth. ,M: OK. The morning break on the eighteenth. ,F: Ah, wait a minute. I made a mistake. It should be during the lunch break.
(A) M: It's OK. You just made a mistake about the place. (B) M: It's fine. You are wrong about the event on the eighteenth. (C) M: I’m sorry, I don’t understand. Could you say it again? (D) M: It's fine. You are just wrong about the time of filling in the form.
Example Output: D

Example Input: M: That's quite a lot of books you're carrying. Let me help you with those. ,F: I'm just going to put them on the desk, just around the corner. I shall be able to manage without help. Thanks anyway.
(A) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) M: Seems like you don't need my help. (C) M: I can move the desk since you need my help. (D) M: I can remove the books from the desk since you ask me to do so.
Example Output: B

Example Input: M: Do you like our new history teacher? ,F: I'm tired of his endless talking, he never gives us a little time to discuss things. ,M: You can't say that, he is a very knowledgeable person. ,F: But I can't see it.
(A) M: Maybe you can't see it, but our Chinese teacher is a very knowledgeable person. (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: Maybe you can't see it, but our history teacher is a very knowledgeable person. (D) M: Our politics teacher we have been talking about is very knowledgeable.
Example Output:
C