Option b is the correct answer The Treaty of Purandar in 1665 was signed between Shivaji and Mughal General Raja Jai Singh I. Due to the attacks on Shaista Khan and Surat, Aurangzeb dispatched Raja Jai Singh I with an army to defeat Shivaji. After facing pressure from Jai Singh's forces and being on the brink of losing his forts, Shivaji agreed to the treaty. The treaty stipulated that Shivaji would surrender 23 forts, retain 12 for himself, pay 400,000 gold hun compensation to the Mughals, and become a vassal of the Mughal empire. Additionally, Shivaji's son Sambhaji was to serve the Mughals with 5,000 horsemen in the Deccan.