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: How can you be shouting at your grandpa? You can't be so rude! ,M: No, I don't want to be rude to him, but I had to shout so that he could hear me. My grandpa has something wrong with his ears. He doesn't hear well. ,F: I'm sorry. I misunderstood you. Your grandpa looks kind. ,M: Yes, he is kind to everybody in our small town. So we all respect him. ,F: He looks quite old now. He must be in his seventies, right? ,M: Yes, he is 75 years old this year. ,F: Though he looks so old, he is still in good health. ,M: Yes, of course, he gets up early every morning and does some exercise in our garden. That's why he is still in good health.
(A) F: I’m sorry, I don’t understand. Could you say it again? (B) F: Wow, it's amazing your grandfather does cooking every morning instead of doing any exercise. (C) F: Since your grandfather does exercise every morning, why is he in such a poor physical condition? (D) F: Sounds reasonable. I will tell my grandma to do some exercise every morning, like your grandpa.
Example Output: D

Example Input: F: I think I want to go back to school, Paul. ,M: Well, that's a nice idea, Cindy. But what would you study? ,F: I'm not sure. I've always been interested in psychology. I think I'd do really well.
(A) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) M: I also think it would help you writing. Go ahead! I support you my bro! (C) M: Are you sure, my daughter? Can you really get good grades? (D) M: Oh honey! Sure you can get good grades, I trust you so much!
Example Output: D

Example Input: F: Good morning, John. Have you finished reading the novel by Dickens borrowed from the library? ,M: No, I caught a cold 2 days ago. I only finish reading half of it. ,F: I'm sorry to hear that. How are you feeling now? ,M: I'm feeling better today. ,F: How many days do you plan to finish reading it? ,M: About 3 days I think.
(A) F: Now that you've finished two-thirds of the reading, it's normal to finish it in two days. (B) F: Didn't you catch a cold five days ago? Why do you want to read the book after three days? (C) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (D) F: Why will it be five days after you've read two-thirds of the book?
Example Output:
C