When the class was over, the students ran out, screamed and shouted

A. As long as the class finished, the students ran out, screamed and shouted.

B. No sooner was the class over, the students ran out, screamed and shouted.

C. As soon as the class had finished, the students ran out, screamed and shouted.

D. If the class was over, the students would run out, scream and shout.