"I say again. This is the most important assignmen...

Câu hỏi: "I say again. This is the most important assignment of the semester", the professor  said.

A. The professor confirmed that that was the most important assignment of the   semester.

B. The professor informed that that was the most important assignment of the   semester.

C. The professor threatened that that was the most important assignment of the   semester.

D. The professor replied that that was the most important assignment of the semester.