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: Have you seen my cat? He is black with white feet. ,M: He was sitting on that grey fence an hour ago. I think he was trying to catch a bird.
(A) F: Are you sure that's my cat? My cat's main color is black. (B) F: So you mean my cat was sitting on that grey fence two hours ago. Are you sure that's my cat? My cat's main color is black. (C) F: My cat's main color is white, and its feet are black. (D) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly?
Example Output: A

Example Input: M: Lucy, I'm terribly sorry to hear your mother was seriously ill. ,F: Don't worry so much, grampa. She is much better now.
(A) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) M: Is she still terribly ill? Sad for her. (C) M: After my operation, your mother is better now. Don't worry. (D) M: Good to hear that your mother has turned much better.
Example Output: D

Example Input: M: Guess what, the television isn't working again. ,F: I had it mended many times. It's really not cheap to have it fixed. Perhaps it needs replacing. ,M: Maybe we can sell it first. ,F: I agree.
(A) M: Why not buy a new one first? Maybe it doesn't need replacing. (B) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) M: Or we can keep it first. We may sell it in the future. (D) M: That's a good idea to sell the television first.
Example Output:
D