Sentence Correction - Verbal and Reasoning

Directions to SolveWhich of phrases given below each sentence should replace the phrase printed inboldtype to make the grammatically correct? If the sentence is correct as it is, mark 'E' as the answer.
Q1:

He should not had done it.

A had not

B should had not

C should not have

D should have

E No correction required

ANS:C - should not have

No answer description is available.