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: 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: M: Pam, where is the closest ATM? ,F: Do you see that yellow building over there? ,M: Yes. ,F: It's right next to it on the right.
(A) M: So it's next to the yellow building on the left, okay, I'll find it. (B) M: Alright, I'll go next to the yellow building and find the ATM. (C) M: I am really sorry, I did not catch that. Would you slow down, please? (D) M: Alright, I'll go to the red building and find the ATM opposite the convenience store.
Example Output: B

Example Input: F: Is the weather in San Francisco so bad all the time in the fall? ,M: Yeah, but this is a typical autumn. It gets worse though, at least it's not raining that much.
(A) F: Why does San Francisco rain so much in the autumn? (B) F: Oh, I didn't know that the fall in San Francisco is that bad. (C) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) F: So the fall in San Francisco is great but the summer is bad, isn't?
Example Output:
B