The correct option is A Sunita and Sanjay
First list the names of the friends/people involved in the question.
Sunil, Sunita, Sanjay, Bindu, Sumit assuming bench as follows. (see image 1)
Sumit is on the left and of the bench Sanjay is 2nd from right.
Sunil is next to Sunita & Sanjay and Bindu are next to one another.
Implies that Sunil and Sunita sit between Sumit & Sanjay. But Sunil is to the right of Sumit as well as Sunita.
So bench will now be (see image 2)
So, obviously Sunil is sitting between Sunita & Sanjay.
Sunil is in the centre. Sanjay is between Sunil & Bindu.
Sumit is on extreme left & Bindu is on extreme right.