A sentence has been given in direct/indirect speech. Out of the four alternatives suggested, select one which best expresses

A sentence has been given in direct/indirect speech. Out of the four alternatives suggested, select one which best expresses the same sentence in indirect/direct speech.

The teacher said to us, “if you do not submit your project in two days all of you will be awarded zero in practical exams.”

A. The teacher told us that if we did not submit our project in two days all of us will be awarded zero in practical exams.

B. The teacher warned us that if we did not submit our project in two days all of us would be awarded zero in practical exams.

C. The teacher ordered to submit our project in two days all of us would be awarded zero in practical exams.

D. The teacher warned us that if we did not submit our project in two days all of us should be awarded zero in practical exams.