Option d is the correct answer. Nagari Das is the Vaishnava name of Raja Sawant Singh of Kishangarh in Ajmer, Rajasthan. By tradition the greatest patron of painting at Kishangarh was Raja Savant Singh. He was an accomplished poet and religious devotee, as well as a friend of the Mughal emperor Muhammad Shah. His poems, written under the pseudonym of Nagri Das, were intensely devotional verse in praise of Krishna and celebrating Krishna's love for Radha and their lives in a mythical Brindaban inspired by Kishangarh's beautiful scenery around Lake Gundaloo.