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: I'm happy to hear about your friend's wedding, sir. For your jacket, would you like a more traditional 3 button or a modern 2 button? ,M: Let's go with the 2 button. I'm not as slim as I used to be, you know.
(A) F: OK. You are going to attend an anniversary party, aren't you? (B) F: Sure. You will look great in this jacket at this business event. (C) F: I am really sorry, I did not catch that. Would you slow down, please? (D) F: Fine. I am sure you will look good at the wedding.
Example Output: D

Example Input: M: Welcome back to your student union radio station. I'm with Catherine, who just successfully climbed the Great Mountain, Mont Blanc. Actually, she once did. The same climb in 2007. Catherine, was it easier the second time around? ,F: In many ways. They were totally different experiences. The first time I went as part of an organized group. We took 4 days to reach the top. This year, I decided to go alone with just one overnight stop, actually you're never really alone. It's all been crowded up there. The first climb, was quite difficult is the weather was very changeable, and we found ourselves climbing in very cold windy conditions. The weather this time was wonderful. Plus. I spent a few days before in chamonix and got myself more used to the height. If it's certainly made it easier, you can also achieve the same thing by climbing some of the smaller mountains first.
(A) M: It's a good idea to spend a few days in Chamonix, which makes climbing easier. (B) M: You are so great! Betty, I should learn to you and make a detailed plan. (C) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) M: You climb smaller mountains for training before your third time to climb Everest.
Example Output: A

Example Input: F: OK. Everyone get on the bus. It's time to set off. ,M: But Miss James, Michael hasn't arrived yet. Can we just wait for him just a little longer? ,F: I'm sorry, Bil. I think we just can't. We'll be very late getting to the art gallery. ,M: I know Miss, but Michael was really looking forward to seeing those paintings.
(A) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) F: Fine. But I don't think it's OK for us to be late getting to the art gallery. (C) F: Fine. We should wait for Michael and go to the zoo together. (D) F: I didn't know that Michael has already gone to the art school.
Example Output:
B