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: Excuse me, could you tell me how to get to the Water Cube from here? ,M: You can take a bus or a taxi. But the traffic is very heavy at the moment. So you'd better take the subway.
(A) F: Thanks for the advice, I'm definitely going to take the subway. (B) F: I take the subway to school every day. (C) F: You mean I should take a bus? (D) F: I’m sorry, I don’t understand. Could you say it again?

Output: A


Input: Consider Input: M: Good morning. Can I help you? ,F: Yes, please. I'd like some eggs.
(A) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) M: I will give you some. Do you enjoy your afternoon? (C) M: Sure. We do have fresh fruits in the morning. (D) M: Sure. We have eggs in the morning.

Output: D


Input: Consider Input: M: Good afternoon, I'm Robert Anderson. I have an appointment with Mrs. Brown. Is she in? ,F: Yes, she is. She is waiting for you in her office. Please, come in.
(A) M: Thank you for accepting my visit. (B) M: Thank you. I'll make a phone call again later. (C) M: I didn’t hear you. Please could you tell me again? (D) M: Thank you. I'm glad to hear that I've just made the appointment successively.


Output: A