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: Was the movie as good as you expected? ,F: It was a waste of time and money. We should have stayed at home. ,M: Why are you so angry about it? It was just a film after all. ,F: To be honest, nothing in it was worth mentioning.
(A) M: Since you think it's a waste of time and money, why do you want to see it again? (B) M: Since you think the film is very bad, why don't you think it's a waste of time and money? (C) M: I am afraid I did not quite catch what you were saying. Please repeat it. (D) M: So you think this movie is very bad, right?

Ex Output:
D


Ex Input:
F: Wow, you look like a drowned rat. Didn't you know there's a thunderstorm today? ,M: I knew there would be a rain, but I didn't expect it would rain cats and dogs today.
(A) F: I am sorry to hear that you almost drowned himself. (B) F: I didn’t hear you. Please could you tell me again? (C) F: So you got wet in the storm yesterday, right? (D) F: Why did you get so wet in the storm?

Ex Output:
D


Ex Input:
F: I like this textbook, but the cover is damaged. Do you have any other copies? ,M: If that is the only copy on the shelf, I'll give you a discount.
(A) F: You can borrow English books here. (B) F: Miss Wang is coming. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F:  I like this textbook much better.

Ex Output:

D