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 that the telephone ringing? ,F: I didn't hear anything. ,M: I thought I heard it ring 2 or 3 times. ,F: Sometimes when the windows are open, you can hear the neighbor's phone. ,M: Well, I'm expecting an important phone call and I don't want to miss it.
(A) F: Relax. You're so nervous. You already missed the important phone call. Maybe you should call them back. (B) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) F: Relax. You're so calm. You should be nervous in case you miss the important phone call. (D) F: Relax. You're so nervous. You should be more calm to wait for the important phone call.

Ex Output:
D


Ex Input:
F: What do you usually do on Sundays? ,M: I go shopping in the morning, work in the garden in the afternoon and read the newspaper after dinner.
(A) F: Oh, you usually go shopping on Sunday afternoons. (B) F: Oh, you usually work in the garden on Sunday afternoons. (C) F: I am afraid I did not quite catch what you were saying. Please repeat it. (D) F: Oh, you usually read the newspaper on Sunday afternoons.

Ex Output:
B


Ex Input:
F: Thank you. The tea smells good. What is it called? ,M: It's called Tie Guanyin, and is a kind of Wulong tea. ,F: I've heard this name before, but I could never understand the tea classification. ,M: It's confusing and there is no agreement on it. Generally speaking, there are 4 kinds of tea based on processing methods. They're green tea, black tea, Wulong tea and scented tea. ,F: It is said that different kinds of tea have different health benefits, isn't it? ,M: Yes, it is. But there are also considerations of time and personal health. For example, green tea is good in summer. It seems to drive away the heat and bring a feeling of relaxation. However, pregnant women should not drink it. ,F: There seems to be a lot to know about tea. You must tell me more about tea culture in the future. ,M: Sure, I'll be glad to.
(A) F: Tea culture is interesting. (B) F: Excuse me, could you repeat the question? (C) F: Tea culture is quiet boring. (D) F: Coffee can bring a feeling of relaxation.

Ex Output:

A