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: M: Would you consider buying a self-driving car? ,F: I don't know. I guess I'd have to research a bit more about them before making that decision. ,M: It will probably be a while before we are able to buy them anyway. We might be seeing self-driving trucks on the road pretty soon, though. Google wants to change the commercial trucking industry. Right now, there are over 3 million truck drivers in the US, so adding self-driving trucks would likely take away a lot of jobs. But many drivers might still be able to accompany their trucks and get a full night's sleep in the process. ,F: Truck drivers cause a lot of accidents on the freeway, so I think I'd like to see self-driving trucks. It would make me feel safer on the road. ,M: Really? I think it might make me feel less safe. A human driver is much more likely to react quickly to something unexpected.
(A) F: I am not agree with you, I don't think they are safer. (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: I am not excited by their speed because I think they are not safe at all. (D) F: Are you serious? I don't understand why you feel scared by them.

Output: D


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: F: Good afternoon, may I help you, sir? ,M: Could you do me a favor please and change this note for me? ,F: Don't you want to buy anything in my shop?
(A) M: Excuse me, I'd like to draw some money in the bank. (B) M: I want to mail a post card, please. (C) M: Yes, I come here to buy some breakfast. (D) M: Excuse me, could you repeat the question?


Output: D