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: M: At first, I thought this shirt was yellow, but now it looks green to me. ,F: You were right the first time. It's the blue light in the store that makes everything look different.
(A) M: Right, I like the light blue color of this shirt. (B) M: I guess so. This should be a beautiful authentic yellow shirt. (C) M: I’m sorry, I don’t understand. Could you say it again? (D) M: I know it's because of the red lighting. It's doesn't look yellow at all now.

Output: B


Input: Consider Input: F: I finished the report. May I leave the office early today? I have to pick up my parents at the airport. ,M: But you are supposed to meet Mr.Black at 4:00 o'clock, aren't you? Can't you ask somewhere else to go to the airport?
(A) F: But I have already finished writing the report. Why can I go pick up my parents at the train station? (B) F: Oh, I forgot about that. I will meet Mr. Black then. (C) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) F: OK, I'll ask Mary to pick up my parents at the train station then.

Output: B


Input: Consider Input: M: Hi Miya, how are you? ,F: I'm very well, thanks. But I'm crazy busy these days. How are you? ,M: Fine, thanks. Why are you so busy? ,F: I have a Chinese test next week. ,M: Come on, I believe you can pass it, your spoken Chinese is good enough. ,F: Uh, speaking is one thing, exam is another thing I'm afraid.
(A) M: You seem very confident about your Chinese exam this weekend. (B) M: Relax! Don't worry! You'll be fine with the English exam next week. (C) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) M: You seem disappointed about your Chinese result. Is it really bad?


Output: C