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: F: Was yesterday's meeting held in room 305? ,M: 305 was occupied and the computer in 306 was out of order, so we moved to 307.
(A) F: Since the computer in room 305 was out of order, why was the meeting held in room 305? (B) F: Since room 306 was occupied, why was the meeting still held in room 306? (C) F: Because room 306 is occupied, the meeting was held in room 307, right? (D) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please?
Example Output: D

Example Input: F: Here are your cold dishes, sir. ,M: Thank you. I wonder why it Chinese dinner always starts with cold dishes instead of hot courses. Could you explain that to me? ,F: Certainly, sir. It's a custom in our country to serve cold dishes first as they have been prepared before hand. ,M: Oh, I see. The chefs in your country are just in the habit of preparing cold dishes first. ,F: I'm afraid that's not exactly right, sir. Chinese people usually regard the dinner party as an occasion for a friendly chat. ,M: Yes, I quite agree. But what does that have to do with serving cold dishes first? ,F: Well, people usually talk more and eat less at the beginning of the dinner. Therefore, if hot courses were served they would get cold very quickly. ,M: I see, but the problem is that I'm already full when it comes to the wonderful hot courses. And I often miss the chances to enjoy many Chinese dishes.
(A) F: Excuse me, could you repeat the question? (B) F: It's just a habit of Chinese chefs. (C) F: Hot dishes would get cold during the chat. (D) F: Hot dishes would get cold during the chat, so people chat less at the beginning of the dinner.
Example Output: C

Example Input: M: Oh, this is so annoying, where on Earth did I put my car keys? ,F: You never learn your lessons.
(A) M: I am afraid I did not quite catch what you were saying. Please repeat it. (B) M: This is the first time I lose my car keys. (C) M: I know. I always lose my car keys. (D) M: I know. I should let you keep the car keys.
Example Output:
C