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.

M: What are you doing there with your mobile phone? ,F: I'm moblogging. ,M: Moblogging? What does that mean? ,F: Oh, Moblogging is a combination of the word "mobile" and "blogging". It's another form of blogging. Users can publish blog entries to the web from a mobile phone or other mobile devices. ,M: Sounds interesting. That must be very convenient. ,F: Yes, you're right. I can blog wherever and whenever I'm on the move. It's especially good when I'm on a business trip and my laptop happens to be away from me.
(A) M: I'm sorry, I didn't catch that. Would you mind speaking more slowly? (B) M: Why do you never blog when you are on a business trip? (C) M: So you only blog when you are publishing some photos, right? (D) M: Oh, you only blog when leaving your laptop at home.
A