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.

Input: Consider Input: F: Hi, Tim. I was wondering if you'd like to drive me to the station tomorrow morning? ,M: I would be happy to drive you there. When do you need to go? ,F: I should get to the station an hour in advance. So I need to leave my house at 7:30.
(A) M: Alright, I'll drive to your home to pick you up at 7:30, I will come on time. (B) M: I didn’t hear you. Please could you tell me again? (C) M: Okay, 7:30 sounds reasonable, then we can go to the school at 8:00 together. (D) M: Alright, I'll come to your home at 8:30 and drive you to the airport.

Output: A


Input: Consider Input: M: Hello. This is the China Telephone Company. What can I do for you? ,F: Is this the Complaints Department? ,M: Yes, it is. ,F: I want to complain about the bill I received this month. I don't think I've made that many phone calls. Have their rates gone up? There must be a mistake in your billing.
(A) M: Why do you think the telephone bill was not accurate? How much is ti? (B) M: Yes, your telephone line was always busy. But you still got a low bill, that's strange. (C) M: Do you mean that the telephone call was not clear. As IT department, I'll help you to solve it. (D) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please?

Output: A


Input: Consider Input: M: What are you good at, Susan? For example, sports, music, art? ,F: I like music a lot and I can play some musical instruments, such as piano, Erhu, guitar, especially violin.
(A) M: I'm surprised that you are best at playing the erhu. Hardly anyone knows it well. (B) M: I am really sorry, I did not catch that. Would you slow down, please? (C) M: You are an expert in playing violin. It's a pity that you don't know other instruments. (D) M: Since you are best at piano, I hope I have chance to listen to you playing.


Output: B