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.

Ex Input:
M: Doctor Wilson, can I talk to you for a minute? ,F: Sure, Fred. What is it? ,M: I'm worried about my grade in your English Class. I really want an A, but. ,F: I see. Well, it might be hard for you to get an A. So far, you have a B average. You would need a 97 or 98 on your final exam to get an A. Do you think you can get that higher score? ,M: Probably not. The problem is that I have to have a B average in all the subjects to get the prize from our government. Otherwise, I'll have to find a part time job. I'm afraid it is difficult for me to put all my heart in my study if I have to work in my spare time. I'll probably get an A in history and a B in maths, but I'll get a C in chemistry.
(A) F: I am really sorry, I did not catch that. Would you slow down, please? (B) F: Sounds great that you can get A in history and maths. Happy for you! (C) F: You must have put in a lot of effort to get A in maths and chemistry! (D) F: Don' t be sad! At least you can get an A in history. Everything will be alright!

Ex Output:
D


Ex Input:
F: Where will we go during this break? ,M: I was thinking of a place in Mexico. Do you remember when we went to that really hot place several years ago, where the water was almost as warm as the air, and we had a hard time sleeping at night? ,F: Yeah. ,M: I'd like to go back there. ,F: But... ,M: Don't worry though. We went during the summer last time, August I think. This time it'll be winter. It's perfect weather there in January. And we'll be able to watch the whales that live there from December to February.
(A) F: All right. So let's go to Mexico in January. (B) F: I am afraid I did not quite catch what you were saying. Please repeat it. (C) F: You're right. So let's go to Japan in February. (D) F: I agree with you. So let's go to Japan in August.

Ex Output:
A


Ex Input:
M: What's the terrible smell? ,F: Oh, I forget about the chicken. Look, it must be burning! ,M: Well, we can't eat that for dinner.
(A) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) F: Sure. We won't eat the burned chicken. (C) F: Sure. We won't eat the burned chicken for lunch. (D) F: Yes. We may eat outside because you forgot to cook the chicken.

Ex Output:

B