单选题
Customer: I'd like to mail this box to Californi
a. Clerk: ______ Customer: Gee, I don't know about that. What do you have? Clerk: Airmail and surface mail. Customer: I guess surface mail is fine.A. Do you want to insure it?B. How do you want to mail it?C. What can I do for you?D. Where will you mail to?