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: 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:
M: Can I have my bill, please? ,F: Yes, one moment, please. ,M: Do you take credit cards? ,F: Sorry, we don't accept checks, either. You have to pay in cash.
(A) M: OK. I'll pay by credit card. (B) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (C) M: Fine. I will pay by cash. (D) M: You don't accept cash? How about credit card?

Ex Output:
C


Ex Input:
M: Do you wanna see me, Miss Anderson? ,F: Yes, Mr. Black. You'll have to get to work on time next time, or your services will no longer be needed here.
(A) M: Sorry, Miss Andy. I won't be late again. (B) M: Sorry, Miss Anderson. I'll come work on time everyday. (C) M: Sorry, Miss Anderson. the worker who was late this morning is not here right now. I'll ask him to see you once he come back. (D) M: I am afraid I did not quite catch what you were saying. Please repeat it.

Ex Output:

B