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.
If I would have realised the nature of the job earlier, I would not have accepted it.
If I have had
In case I would have
Had I been
Had I
No correction required
Correct answer is A
No explanation has been provided for this answer.