7.Your classmate from Britain would like to borrow your computer this weekend. Unfortunately, you need to use it at the same time. How would you refuse the request politely?

A、 "Yes, but you need to give it back to me as soon as possible."
B、"I'd love to, but I'm afraid I've got a lot of things to type up as well."
C、 "Well, why don't you borrow one from someone else?"
D、 "Sorry, I cannot lend it to you."