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: How was the airplane ride yesterday? ,F: It couldn't be worse. It was a 12-hour flight and the couple sitting next to me kept talking all the time. ,M: That was really annoying! Why didn't you listen to some music? ,F: My ears ached when I listen to music, so I had to stop listening to music.
(A) M: I am really sorry, I did not catch that. Would you slow down, please? (B) M: It is good that you want to chat with the couple on the train, you can make friends with them. (C) M: Sure. When you travel on a train, your ears will ache when you listen to music. (D) M: I know your ears will ache when you listen to music. You should see the doctor.

Ex Output:
D


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:
F: Gosh, we've been waiting for ages? What's the matter? ,M: Who knows? It always leaves on time more or less. But in the middle of winter, you have to expect the delay here sometimes. In fact, the trains also sometimes get delayed by snow on the lines or the planes by fog on the runway. Actually, it's probably rain that's holding up things for us right now. ,F: Well, I heard on the radio before I came out that there were some jams this morning, so even when we do finally get moving we'll probably find that it's going slow, especially as the rush hours now about to start. ,M: Oh, bad luck!
(A) F: Maybe there's too much crowd. (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: Yes, it should be traffic jam. (D) F: It should be a matter of schedule.

Ex Output:

C