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: I really have to be going. ,M: Why? Stay a little longer. ,F: No, I must catch the last bus.
(A) M: Why don't you want to go and catch the first bus? (B) M: I didn’t hear you. Please could you tell me again? (C) M: I don't get it why you don't want to stay a bit longer. (D) M: I'm not surprised that you won't stay longer and wanted to catch the first bus.

Output: C


Input: Consider Input: F: I'm planning to go to Canada on vacation. ,M: What places are you going to visit? ,F: First, I'll spend a few days in Vancouver. Then I'll take a train through the Rocky Mountains. ,M: Oh, you're riding through the Rocky Mountains. That's really exciting. ,F: Then I'll fly to Toronto and take a bus to Niagara Falls. I will take a boat under that huge waterfall. ,M: Wow, that's wonderful. You're so lucky! ,F: Well, I hope I don't get seasick. I'll finish my trip in Nova Scotia. I'd like to bike around some small fishing villages. ,M: Have a great time and take lots of pictures!
(A) F: Thank you. I really had a wonderful experience yesterday. (B) F: I am reading an introduction to Canada, but I will not go to Canada. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: Thanks a lot. My travel plan is perfect. I will have a good time.

Output: D


Input: Consider Input: F: Do you know something about the race? ,M: Yeah, Robert only won a narrow victory over others. ,F: But anyway, he won at last. ,M: Yeah, I think I couldn't manage it.
(A) F: Robert gave a lot to the race, I'm glad he won. (B) F: It's a pity that Robert came so close to winning the race. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: I never thought I could overtake Robert and win the race.


Output: A