The correct option is A Raja Jaisingh
The treaty of Purandhar was signed between the Rajput ruler Jai Singh I, who was commander of the Mughal Empire, and Shivaji Maharaj. Raja Jai Singh beseiged the Purandhar fort and Shivaji was forced to sign the treaty so as to protect his empire from damage that would have occurred in case of war with the Mughals.