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: Hello Jane, Jack asked me to have a talk with you. He is really sorry about that. ,F: I don't want to talk to him. ,M: Would you let me explain that to you, please? ,F: I'm not interested. He promised to meet me at the restaurant but he didn't show up. I don't want to see him again.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: Don't be so nervous. Tom will show up on time. (C) M: Oh, you are so happy that he met you at the restaurant. (D) M: It's useless to be so angry. He is not sorry at all.
Example Output: A

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: M: Lucy, did anyone call while I was out? ,F: Yes, there was a Mr. Turner calling this morning. ,M: What did he say? ,F: He said that your suit was done. ,M: Ah, good! I ordered a suit from his shop last week.
(A) F: Really? You ordered a suit from Mr. Turner' s shop last month and you bought a suit in Mr. Turner' s shop last week? (B) F: Well, Mr. Turner didn't say that your suit was done although you returned a suit in Mr. Turner' s shop last week. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: So, you mean you ordered a suit from Mr. Turner' s shop last week? Oh, he said that your suit was done.
Example Output:
D