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: Oxford Travel Agency, how may I help you? ,F: Hello, I'd like to ask about the package tour from Newcastle to London. ,M: Sure, what's your question? ,F: Your website says that the trip starts off every Thursday. Can I join the trip on July thirtieth? ,M: Sorry, I'm afraid it's full. How many people are going? ,F: My husband and our two children will go with me. ,M: 4 people then. There is still enough places on August sixth. Will that do? ,F: That's fine. Any discount for children under 12? ,M: Sorry, the price for children is the same, 700 pounds each person. It's already cheaper than other agencies.
(A) F: I'm going alone, so I just need to pay the $700, right? (B) F: 1,400 dollars per person? So it's $2,800 for mom and me. (C) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) F: Wow, I will have to pay $3,300 in total for this Oxford trip.

Ex Output:
C


Ex Input:
M: Hello I'm Tom, who are you? ,F: I'm Marry. I'm from Korea. ,M: Really? How nice. How long have you stayed in the US? ,F: Four years. ,M: That's a long time. Have you been back to your country? ,F: No. ,M: You must miss your home. ,F: Sure, but gladly, my family are going to visit me next week. ,M: You must be very excited. ,F: Of course. ,M: How do you like New York? ,F: It's a modern city, full of energy and people here are quite friendly.
(A) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) M: Yes, New Yorkers are friendly, but you Spanish are friendly, too. (C) M: I agree with you. People in New York are busy and unfriendly. (D) M: So as a local American, you think New Yorkers are energetic.

Ex Output:
A


Ex Input:
M: My kid is busy at school. He is the monitor in his class. ,F: Mine too, but he is the study monitor.
(A) M: I am afraid I did not quite catch what you were saying. Please repeat it. (B) M: So, you mean your son is the doctor at school. Actually my kid is the monitor in his class but he is not busy at school. (C) M: Really?  You son is the study monitor at school? Oh, my kid is not the monitor in his class. (D) M: OK, I see. You son is the study monitor at school.

Ex Output:

D