16. Charlotte: Kyle, I could barely sleep last night. The music was too loud from your apartment!
Kyle: Oh no, I'm really sorry about that. We were throwing a birthday party for my friend, and we didn't realize how loud we were getting.
Charlotte: I understand, but the music and shouting went on until 2 a.m.! .
Kyle: I'll make sure it doesn't happen again. Thanks for letting me know.

(A)How many guests are you inviting?

(B)Did you guys go grocery shopping?

(C)Would you mind turning up the volume?

(D)Could you please keep it down next time?