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: Batina and Simon are getting married next month. ,M: Really? How do you know? Have you seen them recently? ,F: Not for ages. I got Batina's call this afternoon. ,M: That's great! I hope will get invitations to the wedding soon.
(A) F: Don't be disappointed. They must have forgot to call us. (B) F: Don't be depressed. Batina is going to be happy with Simon and you will find someone else. (C) F: I am afraid I did not quite catch what you were saying. Please repeat it. (D) F: Calm down. Don't be so excited. They won't hold their wedding until next year.
Example Output: C

Example Input: F: That looks nice. I'll have a cheeseburger and fries. ,M: Anything to drink? ,F: A chocolate milkshake. ,M: That'll be $2.75.
(A) F: Here it is, and you need to give me $2.65 change. (B) F: OK, here's $2.75 for the food and drink. (C) F: $2.75 for a milkshake? That's expensive. (D) F: I didn’t hear you. Please could you tell me again?
Example Output: B

Example Input: F: Have you booked the train tickets? ,M: Yes, the train leaves 4 o'clock and arrives at London at about 10. ,F: What about the plane tickets from London to Paris? ,M: Well, I want your advice. If we take the plane, leaving at midnight, we'll have to pay 260 pounds each. But if we leave at 8 in the morning, we'll have to pay 410. ,F: Can we get to the airport at 11? ,M: Yes, it's only 30 minutes from the railway station to the airport. ,F: Then we'll take the plane, leaving at midnight.
(A) M: We'll have to pay 410 in total for the plane tickets if we we leave at midnight. (B) M: Considering we'd like to avoid unnecessary cost, we'll spend 520 for the plane tickets. (C) M: It must be exhausted to take the plane in the midnight so let's take the morning one, which will cost 820 pounds. (D) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly?
Example Output:
B