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: Hi, Charles. Did you see the football game on TV last night? ,M: Hi, Laura. I wanted to watch it, but I couldn't. ,F: Oh, that's a pity. It was really exciting. Why couldn't you watch it? ,M: Oh, my wife wanted to see a new play.
(A) F: Yeah, the book we read yesterday night was very interesting. (B) F: What's the fun of seeing a new play alone? You should have watched the sports game with me last night. (C) F: I am afraid I did not quite catch what you were saying. Please repeat it. (D) F: Oh, I understand. How's the social event you attended last night?

Output: C


Input: Consider Input: M: How much is the cap? ,F: 8 yuan for 1, 14 yuan for 2, and 18 yuan for 3. ,M: Then I'll take 3.
(A) F: 8 yuan, please. (B) F: OK. These four caps cost 18 yuan. (C) F: 14 yuan, please. (D) F: I am afraid I did not quite catch what you were saying. Please repeat it.

Output: D


Input: Consider Input: M: It's wonderful after the rain. The Sky is clear and the air is so fresh. ,F: You bet. Let's go for a walk outside on this fine day.
(A) M: Definitely, let's go out and enjoy the sunshine now. (B) M: It's been sunny for days. I feel really hot. (C) M: It's cloudy. I'd rather stay at home. (D) M: I am afraid I did not quite catch what you were saying. Please repeat it.


Output: A