F: Dave, I'm going to the supermarket to pick up food and drink for Saturday's picnic later. Any suggestions? ,M: Well, everyone has been talking about having a barbecue down by the river. So why don't you pick up some hamburgers and hot dogs?
(A) F: Yes, you are right. Our Sunday travel plan is perfect. (B) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) F: Yes, you are right. We should prepare well for our picnic on Saturday. (D) F: Yes, you are right. I am looking forward to our barbecue time on Sunday.
C