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: Good morning, madam. What can I do for you? ,F: I bought this new radio here half a month ago, then I posted it to my daughter who is studying English in Shanghai Foreign Language University. But a week later she posted it back, saying that it doesn't work. I don't know why. Could you help me check out the radio? ,M: Let me see. Did you check it when you bought it?
(A) F: The radio stopped working one day when I was listening to music. It doesn't work anymore. (B) F: I didn’t hear you. Please could you tell me again? (C) F: I really need to go back to the post office to take back my radio. (D) F: Maybe. Now the radio stops receiving any program.
Example Output: B

Example Input: M: I can't find my maths book in the drawer, has anyone taken it? ,F: It should be on your desk in the bedroom. I cleaned the drawer yesterday.
(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: So you mean my math book is probably on my desk, don't you? (C) M: As you said, my maths is book probably on my desk in the dining room, right? (D) M: Why do you say that my maths book is probably on my bed? You didn't clean the drawer yesterday.
Example Output: B

Example Input: M: I want to go traveling to Hawaii. ,F: That sounds like fun. How do you want to go? ,M: I want to go there by sea but I have no idea how much it will cost. ,F: I think it depends on the season. ,M: Well, of course. I want to go when the weather is nice. ,F: Are you going to travel alone? ,M: No, my sister and I will travel together.
(A) F: I am really sorry, I did not catch that. Would you slow down, please? (B) F: Seeing your sister in Hawaii is great. (C) F: Well, going to Hawaii by yourself is a good decision. (D) F: So you won't travel to Hawaii by ship.
Example Output:
A