Correct option is A
Dinesh is not sitting with Elango.Elango is on the left end of the bench.
Elango _ _ _ _
Cheenu is on the second position from the right.
Elango _ _ Cheenu _
Arun is sitting next to Bala. Arun sits to the right of Bala.
[Bala Arun]
Elango Bala Arun Cheenu _
Dinesh is sitting next to Cheenu.
Elango Bala Arun Cheenu Dinesh
What is the position of Dinesh?

Dinesh is extreme right of the bench.