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.

Ex Input:
M: Sarah, have you had a chance to buy that new novel you wanted? ,F: Actually, I've already got it. I visited at least 5 bookstores yesterday and finally found a copy in our school library. ,M: Lucky you, I've been looking forward to reading it. ,F: It's in my study. I'll go and get it if you'd like to borrow it.
(A) M: I didn’t hear you. Please could you tell me again? (B) M: Oh, thank you very much, I never thought you could get the copy from our school library. (C) M: No, thanks, I have another copy besides the one you took from my home. (D) M: No,thanks, it's not in your study. Since you can find this book from the library, I believe I can too.

Ex Output:
B


Ex Input:
M: What seems to be the problem, Mrs. Garcia? ,F: When I look at the newspapers, I can hardly read it. ,M: Well, you might need a new medicine. Let me examine your eyes.
(A) F: You can borrow Lu Xun's book here. (B) F: Excuse me, could you repeat the question? (C) F: Will you come to the hospital tomorrow? (D) F: How do I take these drugs?

Ex Output:
D


Ex Input:
F: I went to a picture show last night. What about you? ,M: I watched an exciting football match at home.
(A) F: Show me the pictures you painted last night? (B) F: How was your football game last night? (C) F: I am really sorry, I did not catch that. Would you slow down, please? (D) F: What teams were there in the football match you watched last night?

Ex Output:

D