Read each sentence to find out if there is any grammatical error/mistake in it. Choose the sentence/option, which is CORRECT (without any errors in it). If all the sentences are correct, mark option 5 as the answer.
1
Rahul's boss kept him waiting for over a hour.
2
Rahul's boss kept his waiting for over the hour.
3
Rahul's boss kept him waiting for over an hour.
4
Rahul kept him boss waiting for an hour.
5
All are correct.