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: Mother, can you buy me a copy of this month's sunrise magazine? There's an article in it about how to care for fish. ,F: Sure. I'll get one for you this afternoon when I go to get a new teapot.
(A) M: Thanks. I just need a fashion magazine. (B) M: Thanks. I just need a magazine. (C) M: I am afraid I did not quite catch what you were saying. Please repeat it. (D) M: Could you please bring me a teapot?
Example Output: B

Example Input: F: Why do you like your college so much? ,M: Because it has great teachers and I like all my classmates, too. But most importantly, it's not expensive.
(A) F: Yes, classmates are always the main reason we like our college. (B) F: I understand. Your college won't cost you much, so you like studying there, even though your classmates aren't friendly. (C) F: Now you can be happy to take classes from great teachers. That was your dream. (D) F: I'm sorry, I didn't understand. Could you repeat a little louder, please?
Example Output: D

Example Input: M: Good evening, what can I do for you? ,F: Good evening. I would like to buy a bottle of perfume. ,M: OK. We have many kinds of perfume here. You can choose freely. ,F: Which brand would you recommend? I don't want to buy one with quality problems. ,M: Don't worry, we have no such problems. How about this one? It sells very well. ,F: Umm, it smells good. How much is it? ,M: 400 yuan per bottle. And if you buy 2 bottles at the same time, you can get a 10% discount. We have other special offers as well. If you buy lipstick or face cream, you can get a free gift. ,F: Thanks. I just need perfume when I want to buy lipstick I will come here again.
(A) M: Sure. It was 400 yuan each bottle early, but now, it is 360 for one. Thank you. (B) M: Sure. It will be 400 yuan for one bottle. Thank you. (C) M: I'm sorry, I didn't understand. Could you repeat a little louder, please? (D) M: Sure. It will be 440 yuan for one bottle. Thank you.
Example Output:
B