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:
F: Now if there are no more questions, let's move on to the next part. ,M: Excuse me, professor, could we go over that last point once more?
(A) F: I didn’t hear you. Please could you tell me again? (B) F: Ok, since you want to review the last point, I will tell it again. (C) F: Although you want to move on to the next part, we still have some questions. (D) F: If you want to ask more questions, go ahead. We won't move on to the next part yet.

Ex Output:
B


Ex Input:
M: I'm hungry, do you want to go to the burger shop and get something to eat? ,F: Sure, but I need to stop at the drug store first. I need some vitamins.
(A) M: That's okay. I can wait. Please buy me soft drinks. (B) M: Excuse me, could you repeat the question? (C) M: That's okay. I can wait. Thanks for buying me some breads. I don't eat burgers any more. (D) M: That's okay. I can wait. Thanks for buying me some burgers.

Ex Output:
D


Ex Input:
M: Which color do you want our bedroom to be painted, blue or yellow? ,F: Can I choose another color? ,M: Sure. I haven't bought the paint yet. ,F: Great. I'd like green then. I love green. ,M: OK. So what color would you like for the sitting room? ,F: I think just a simple white would be OK. What color does Jim want his bedroom to be? ,M: He chose blue. You know, it's his favorite color. ,F: Yeah. So who have you found to paint for us? ,M: Well, I'd plan to ask your uncle to do it for us. But he isn't in Los Angeles now. He's in Chicago for about 2 weeks and then he'll go to New York for a while. So I've decided to paint by myself.
(A) F: Oh, that's too bad. He's in L.A now. I guess we can work together. (B) F: When did he go to L.A? We just wait for him coming back to finish the work. (C) F: He is in Chicago now.  Maybe I can help you some times if you want. (D) F: Excuse me, could you repeat the question?

Ex Output:

C