F: I'm sorry for the noise, Mark. I didn't know that you were taking a nap when I put on the music. ,M: It's alright, Kate.
(A) F: I am really sorry, I did not catch that. Would you slow down, please? (B) F: I sang a song, but I didn't realize you weren't napping. (C) F: I listened to some music. Since you haven't been napping, would you like to listen to it? (D) F: I took a nap in my room and didn't notice you had music on.
A