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: Mom, I'm telling you that global warming isn't real. I read a news article about it. ,F: Boy, you'll believe anything you read, won't you? ,M: Come on. Do you mean newspapers lie? ,F: You shouldn't accept everything you read or see on the news. It's a good idea to question it.
(A) M: Excuse me, could you repeat the question? (B) M: So dad you think I should read the paper every day and believe everything it says? (C) M: You're right, mom. I'll learn to question what I see. (D) M: Okay dad, I'll question everything around me.

Ex Output:
C


Ex Input:
F: I think I should use the bathroom before we go. It's a long drive to the countryside. ,M: Yes, but there are plenty of rest stops along the highway. ,F: I know. I guess this is why driving is much more convenient than taking a bus or train.
(A) M: There is no rest stop along the way. It would be too tired for you. I'll drive. (B) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (C) M: Which bus should we take? (D) M: We take the train to the countryside. I've booked the tickets.

Ex Output:
B


Ex Input:
F: Good afternoon, I'm Roseanne, your flight attendant. Welcome aboard. ,M: Hello. I've got seat A8. I hope it's by a window, so that I can see the view.
(A) F: Your seat is B5 in this train. (B) F: Hello. I am the bus driver. (C) F: Your seat is A9 on the plane. (D) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that?

Ex Output:

D