Mark the letter A, B, C, or D to indicate the correct response to each of the following exchanges.
“City dwellers are always so busy, aren't they?" – "____”
A. No, they aren't. Everybody's rushing about all the time.
B. Not really. Everybody's rushing about all the time.
C. I'm not sure. Everybody's rushing about all the time.
D. Yes, everybody's rushing about all the time.