Given the task definition and input, reply with output. 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.

F: Hello, this is Elisa speaking. May I speak to John please? ,M: I am sorry, but John is out for lunch. Would you like to leave a message? ,F: Er, when will he come back? ,M: He usually comes back by 1:00 PM. He usually takes a nap before work begins in the afternoon. ,F: Then I'll call again in half an hour.
(A) M: Yeah, half an hour. It's reasonable to call him right at 1pm then. (B) M: He just left 10 minutes ago at 11:50. Maybe call an hour later. (C) M: I'm sorry, I didn't catch that. Would you mind speaking more slowly? (D) M: It's already 1pm now, so he'll be taking a nap in half an hour.
A