Which of the phrases given below the sentence should replace the phrase printed in bold type to make it grammatically correct? If the sentence is correct as it is, mark 'E' as the answer.

You will be late if you do not leave now

A.

did not leave

B.

left

C.

will not leave

D.

do not happen to leave

E.

No correction required

Correct answer is E

No explanation has been provided for this answer.