21. Janitor: Sorry, I wonder if you would _______________. You’re blocking the emergency exit for the theater. Visitor: I’m sorry, I must have missed the sign. Could you suggest a place to park? Janitor: The sign is here, just behind the tree. Visitor: Thanks. I’ll move my car right away, but you really should cut those branches. (A) mind locking your vehicle (B) mind moving your van (C) sign a contract with us (D) watch the movie with us or not