You will be given a definition of a task first, then some input of the task.
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.

F: Are you OK, Chuck? You look pale. ,M: I'm fine, Catherine. I just stayed up late last night working on my Chinese. ,F: Oh, poor you. You know what, I found a new way to learn Chinese and it works very well. ,M: You did? Do tell me. I've spent all these months trying to learn something new about it. But I've made little progress. ,F: Sure. I'm learning Chinese through songs. ,M: So you're learning Chinese songs? ,F: You can say that. I can actually sing some of them now. ,M: That's a real achievement. How did you do that? ,F: I start by listening to the song a few times and after several times I am able to follow the singer.
(A) M: I'm sorry, I didn't understand. Could you repeat a little louder, please? (B) M: So, you can actually sing none of them now and you study Chinese by writing? (C) M: So, you start by listening to the radio a few times and then you study Chinese by learning Chinese songs? (D) M: So, even after several times you are not able to follow the singer and you study Chinese by reciting Chinese poems?
Output:
A