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:
F: Are you busy tonight? I was wondering if you could drive me to the airport. ,M: The airport? But that's so far away. ,F: It would really help me out. My car isn't working.
(A) M: I will fix your car, but you need to take a taxi to the train station. (B) M: I will drive you to the airport. (C) M: I can give you a lift and drive you to the train station. (D) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that?

Ex Output:
B


Ex Input:
F: Hello, Universal Export Shanghai. May I help you? ,M: Good morning. This is Ryan Jacob from New York office. May I speak to David Parker please? ,F: Certainly, Mr.Jacob. Can you please hold for a moment? ,M: Thank you. ,F: I am sorry to keep you waiting, Mr.Jacob. Mr.Parker apologizes for not being able to speak with you at this moment. He is on another line. When can he call you back? ,M: Uh, let me see. It's 9:00 o'clock in the evening here. We are 12 hours behind. Tell him to call me in the next 2 hours. Otherwise, tonight after 8:00 o'clock. ,F: Do you mean tonight Shanghai time? ,M: Yes, that would be your time.
(A) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) F: OK, I'll remind him to call you at 2:00 in the afternoon Shanghai local time. (C) F: OK, I'll remind him to call you at 9:00 in the evening Shanghai local time. (D) F: OK, it's 9:00 in the morning here in Shanghai, I'll remind him to call you in 3 hours.

Ex Output:
A


Ex Input:
M: I would like to make a hotel reservation. ,F: What day will you arrive? ,M: I will arrive on May fourteenth. ,F: How long will you stay? ,M: I need the room for 3 nights. ,F: How many people will stay in the room? ,M: I will stay in the room alone. ,F: Would you like a smoking or non-smoking room? ,M: I need a non-smoking room.
(A) F: A single non-smoking room is the best. I will keep it for you. (B) F: OK, you could have a single smoking room for 4 nights. (C) F: You must want to stay in the single non-smoking room with your wife! (D) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that?

Ex Output:

A