M: Can you hold the door for a minute, Lucy? I've got a big bag full of books here. ,F: Hi Ned. Nice to see you! Up to the fourth floor?
(A) M: Yes, thanks for holding the car door for me. I just get too many pencils in this big bag. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: Yeah! Thanks you for holding the elevator's door for me. (D) M: Thanks for hold the bookstore's door for me. I get nothing in my bag now and I will go into the bookstore and buy books.
C