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.

Input: Consider Input: F: Can I sit here and wait for the doctor please? ,M: Sure but you may have to wait for a while. ,F: When will the doctor return? ,M: He said he'd be back around 4:30 PM, so an hour from now.
(A) F: I am afraid I did not quite catch what you were saying. Please repeat it. (B) F: You said he will back at 3:30 pm? (C) F: Okay, now is 3:30 pm and I will go to the mall first and be back one hour later. (D) F: He must be back as it's 4:30 pm now.

Output: C


Input: Consider Input: F: How dangerous it was and how lucky the girl was. ,M: Yes, but for the passerbys quick action the girl would have been run over by the car.
(A) F: Yes, there was traffic accident. How bad luck the girl has. (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: The girl is badly ill. (D) F: I hate that thief.

Output: B


Input: Consider Input: F: John, my brother has taken part in the National College Entrance Examination and now he needs to fill in a form with the colleges he wants to go to. Do you have any experience? ,M: I don't know much about it. Choosing colleges in the states is quite different from it in China.
(A) F: You are right. I don't know how to fill in a form for him, so I want to ask you for some advice. (B) F: Yes. I want to compare Chinese and American colleges. Because my sister is about to going to college. (C) F: Maybe. I want to ask you about choosing a college for my brother. He will go to college next year. (D) F: I am afraid I did not quite catch what you were saying. Please repeat it.


Output: D