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: I think I should use the bathroom before we go. It's a long drive to the countryside. ,M: Yes, but there are plenty of rest stops along the highway. ,F: I know. I guess this is why driving is much more convenient than taking a bus or train.
(A) M: There is no rest stop along the way. It would be too tired for you. I'll drive. (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: Which bus should we take? (D) M: We take the train to the countryside. I've booked the tickets.

Output: B


Input: Consider Input: F: Hello, American Medical Association. Can I help you? ,M: I want to find a doctor. ,F: What kind of doctor are you looking for? A general doctor or a specialist? ,M: What is the difference between a general doctor and a specialist? ,F: A general doctor treats a variety of illnesses and will treat your whole family. A specialist concentrates in one area, like the heart or the skin. ,M: Then I would like to find a general doctor. ,F: In that case, you may want to call Doctor Green at 6663579 or Doctor Smith at 6668520.
(A) M: Thank you for telling me those treatments. I'll call Doctor Brown later. (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: Thank you for helping me make the appointment with the lawyer. (D) M: Thank you for all your information. That helped a lot.

Output: D


Input: Consider Input: F: Oh no. It's still out of order. ,M: I'm afraid we will have to walk up all those stairs again today.
(A) F: Don't worry! Your computer is in good order. (B) F: I didn’t hear you. Please could you tell me again? (C) F: The elevator broke down yesterday. It's fixed today, so we don't have to climb stairs. (D) F: Well, I really want the elevator fixed soon.


Output: D