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.
Had I realised how close I was to the edge of the valley, I would not have carried the bags there.
Had I been realised
If I would have realised
When I realised
Had I had realised
No correction required
Correct answer is E
No explanation has been provided for this answer.