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.

Example 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.
(A) F: So, you are gonna leave Shanghai on May 14th. (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: On May 16th, you will go to the United States, right? (D) F: Sir, you can check in our hotel on May 17th.
Example Output: B

Example Input: F: Have you completed the arrangements for the trip yet, Brian? ,M: I've made the reservations, but there are still some details to make sure. Your plane leaves at 8:30, so I'll pick you up at your house at 6:00. ,F: 6:00? I'll have to get up in the middle of the night! ,M: I'm sorry. You have to check in by 7:00 and I think there will probably be a long queue. ,F: Oh, very well. What about my meetings? ,M: First, the Managing Director is coming to the airport to meet you.
(A) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) F: Good. I'm glad that the Managing Director is coming to the train station to meet me. (C) F: Good. I can't wait to see my doctor at the train station. (D) F: Good. I can't wait to see the secretary at the train station.
Example Output: A

Example Input: M: Hi, Ruth. What's up? ,F: Well, the students union needs a couple of volunteers to show the new students around next week. Would you be able to help out? ,M: That depends on the days you had in mind. ,F: What about Saturday? Most of the new students will probably arrive on the weekend. ,M: Sorry, I have to work all day on Saturday. How about Thursday and Friday? I've got both mornings free. ,F: I don't have the timetable on me. Ken and Betty both have got it. I'll tell Ken to get in touch with you later today.
(A) M: Good. I'll wait for Betty to get in touch with me later. (B) M: Good. I'll wait for Ken to get in touch with me later. (C) M: I didn’t hear you. Please could you tell me again? (D) M: Good. I'll wait for Ruth to get in touch with me later.
Example Output:
B