Behave yourself or your parents will be disappoint...

Câu hỏi: Behave yourself or your parents will be disappointed.

A. Unless you behave yourself, your parents will be unhappy.

B. As long as you don't behave yourself, your parents will be disappointing.

C. If you behave yourself, your parents will be disappointed.

D. Provided that you behave yourself, your parents will be disappointed.