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: You look tired. Didn't you get enough sleep last night? ,M: No, I had a bunch of friends over and we partied until midnight. ,F: No wonder you look so bad. ,M: I guess I just can't take late nights like I used to. My head is spinning. ,F: I think you need to go home and take a rest. ,M: I wish I could, but I don't think I can keep my eyes open long enough to drive home. ,F: Don't worry. I'll give you a ride home.
(A) M: Thank you for driving me home. I will not take late night any more. (B) M: We did have lots of fun together last night, let's have a rest now. (C) M: You can go home. I'll stay working for a while since my head is clear. (D) M: I'm sorry, I didn't understand. Could you repeat a little louder, please?
Example Output: A

Example Input: F: What is it? I'm trying to study here. ,M: Lisa, you are the most beautiful woman in the world. ,F: Oh, knock it off, Justin. Just tell me how much you need? ,M: What? Can't abroad jis sister how pretty is. ,F: Dude, I really don't want to lend you any cash. ,M: OK. I need a $60 to pay for a parking ticket. I got outside the bank lost tonight. ,F: Here's the money. Just take it away, OK? ,M: Oh, thanks, Lisa. But I only need 60. ,F: The extra 20 is so. You can take yourself out to dinner tonight. That's the only way I will ever get some starting down around here
(A) M: You give me $20 only. (B) M: Thanks. $80. Oh, I'm so happy. (C) M: $60 is not enough. (D) M: I'm sorry, I don't understand. Could you say it again?
Example Output: B

Example Input: F: How do you know how old a star is? ,M: For most stars, we find its age from how big it is. We can know its size from the amount of light it puts out and its color. Then the size tells us how long a star will live. Big stars live a short life, while small stars live much longer. ,F: I've always wondered if there is an end in space. Do you think scientists have found the answer? ,M: This is a difficult question. The truth is that we have no idea. We currently don't have a way of testing it. But some scientists will come up with a way in the future. I have faith in it. ,F: The last question is from our readers. Do you believe there is other life in different parts of the universe? ,M: There are so many planets in the universe. Life may exist on other planets, but will we ever find or research them? I think that's very unlikely.
(A) F: Why do you think it is easy to find life elsewhere, since you are my best teacher in school. (B) F: Since you are a scientist, why do you think it is impossible to find life elsewhere? (C) F: I also think it is exciting to find life elsewhere, let us go to school and tell our teachers. (D) F: I didn't hear you. Please could you tell me again?
Example Output:
D