单项选择题

[听力原文]8-10
W: What are you doing, Bill Writing a letter
M: Yes, and it’s not easy.
W: My Aunt Mabel sent me a gift for my birthday. I can’t remember which gift was hers, but I want to thank her for it.
M: Oh, that’s a difficult problem. When it happens to me, I just write to say" Thank you for the wonderful girl" without saying what a gift was. Are you with me
W: Yes, thanks. That’s a clever idea.
M: When you have a bad memory, you have to be clever.

What does "Are you with me" mean()

A.Are you listening to me
B.Are you clear
C.Are you still in the room
D.Are you still my friend