Read the sentence below to find out whether there is any grammatical error in it. The error, if any, will be in one part of the sentence. Choose the option with that part as your answer. If there is no error, choose 'D' as your answer. (Ignore the errors of punctuation, if any).

If I were him, I would have taught those cheats a lesson.

A.

If I were him,

B.

I would have taught

C.

those cheats a lesson.

D.

No error

Correct answer is A

If I were he,