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: F: Good morning, young man. What's your name, please? ,M: My name is Zhang Ming. I'm 12 years old now. Can you introduce your doctors? ,F: We doctors in this hospital fly to different poor places. People with eye problems can come to us. We give medicine to the poor or do operations on them free. ,M: I started to have problems with my eyes when I was 7. Now I can't see things clearly. Can you help me? ,F: Yes, of course. We'll try our best. ,M: My parents don't have enough money for the medicine or the operation. ,F: Don't worry. We get donations from all over the world. You don't have to pay.
(A) M: Really? If I don't need to pay much, I'm willing to receive treatment right now. (B) M: I'm afraid that I couldn't pay a lot of money to treat my sister's eye problem. (C) M: I didn’t hear you. Please could you tell me again? (D) M: My sister will be very happy if she know she can cure her eye for free.
Example Output: C

Example Input: F: Police station, can I help you? ,M: Yes, I'm calling to tell you I found a car. I thought it might be a stolen car. ,F: I see. Where exactly did you find it? ,M: Near the number 8 bridge along the London Road? ,F: Can I know your name and address please? ,M: Henry Roberts. I live at 51 Eaton Road. ,F: What do you do, Mister Roberts? ,M: I'm an engineer at backs at company.
(A) F: I see. You are an engineer, aren't you? What else did you find? (B) F: Oh, you are also a policeman. Why do you need to call us? (C) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (D) F: I see. You are a driver and you have found a stolen bike.
Example Output: A

Example Input: F: Hurry up, Jack! It's going to be late. ,M: I'm coming now. ,F: Don't forget your name card and umbrella. It's going to rain. ,M: It's only cloudy outside and it will turn sunny later in the afternoon. So it was yesterday.
(A) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) F: It's sunny now. There's no need to take the umbrella. (C) F: But there are a lot of clouds in the sky now. (D) F: It was cloudy yesterday and it's raining now.
Example Output:
C