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: I can't stand this heat. I can't get my attention to studying for the midterm exam. I guess I'll have to go to the library this afternoon. ,F: I don't blame you. This dormitory doesn't have air conditioning. I can't study, either. My roommate and I are thinking about moving out to the other dorm, or an apartment that has air conditioning. ,M: Oh, I thought about moving to. But if I want to live in an apartment, I have to pay a lot of money for electricity. Do you know an air conditioner is cheaper today than it was 10 years ago? On the other hand, electricity is a lot more expensive today. ,F: I didn't know that. How much do we have to pay for the electricity? 5 years ago, it was possible to run an air conditioner 24 hours a day for mere $20 a month. Today, the same air conditioner in the same house cost more than $40 a month.
(A) M: Excuse me, could you repeat the question? (B) M: That means $35 will cost to run an air conditioner 24 hours a day for 2 months 5 years ago. (C) M: Today, as five years ago, running an air conditioners 24 hours a day cost $20 for 2 months. (D) M: Electricity is cheaper today. 5 years ago, running an air conditioners 24 hours a day cost $40 for 2 months.
Example Output: A

Example Input: F: Hello. ,M: Susan? ,F: Yes, Peter is that you? ,M: Yes. ,F: Hi. How are you? ,M: As a matter of fact, I'm rather weak, that's why I'm calling you. I've had a stomachache and a terrible headache for 2 days. Now I think I need a doctor. ,F: Do you have a temperature? ,M: No, I don't. But I feel like I'm burning up. I think I need a doctor, but I'm not sure how to get one. ,F: Did you take out any medical insurance when you first came to university? ,M: Yes, I did. ,F: Good our university clinic has excellent doctors. I have a lunch break at noon and I'll drive over and pick you up. ,M: Oh, I feel so bad. Couldn't you get a doctor to come here? ,F: That's a little difficult. Go back to bed, I'll pick you up just afternoon.
(A) M: I'll wait for you to drive me to see the doctor. It's so kind of you. (B) M: Sure, I shall arrive soon. Wait for me and I'll drive you to the hospital. (C) M: I'm sorry, I didn't understand. Could you repeat a little louder, please? (D) M: OK, let walk there. I have a temperature, but I think I can manage it.
Example Output: A

Example Input: M: I'm sorry, but you can't take your camera inside. You'll have to leave it here and pick it up after the concert. ,F: Well, I guess it's too late to take it back to the car. Please be careful with it. It belongs to my roommate. She'll never forgive me if anything happens to it.
(A) M: OK, since we are in the parking lot, you can take your camera with you. (B) M: OK, I will, because this is at the entrance of the concert, I will be careful. (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: Although this is your father's camera, I'm careful because it's at the entrance of the concert.
Example Output:
B