I cannot become a Math teacher because I am...

Câu hỏi: I cannot become a Math teacher because I am not good at Math.

A. If I were good at Math, I could become a Math teacher.

B. Unless I were good at Math, I could become a Math teacher.

C. As I were good at Math, I could become a Math teacher.

D. Whether I were good at Math, I could become a Math teacher.