Definition: 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.
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?
(A) M: You bought it just a week ago. No wonder it's very new. (B) M: You got the radio two weeks ago and has been using it ever since. (C) M: I’m sorry, I don’t understand. Could you say it again? (D) M: Let me check the receipt. Your radio was bought a month ago.

C