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: Cindy, how are you getting along with the translation work? ,M: I have written and rewritten so much that I don't know if I'll ever get it finished.
(A) F: Don't be discouraged. Your translation can be done well. (B) F: I'm sorry, I don't understand. Could you say it again? (C) F: You are so satisfied with your translation work, right? (D) F: Don't feel so sad about that your written work is not good enough.
Example Output: A

Example Input: F: One ticket to Chicago, please. ,M: Yeah, Ok, that's $24.00. ,F: Does this one have a dining car? ,M: Yeah, there is a dining car and a snack bar. Here's your change. ,F: Thanks.
(A) M: Why isn't there a dining car? We are on the train, aren't we? (B) M: So although we are in the dinning hall, there is no snack bar, right? (C) M: Why isn't there a dinning hall in the ticket office? (D) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that?
Example Output: D

Example Input: M: Rose, there's a really good view over there. ,F: Sorry, we can't stop here. There is nowhere to park.
(A) M: I'm sorry, I didn't catch that. Would you mind speaking more slowly? (B) M: Keep running! (C) M: Park here. We don't need to drive there. (D) M: Keep driving.
Example Output:
D