Which Bhakti Saint propounded Suddhadvaita Vedanta (Pure non-dualism) and philosophy called Pustimarga (the path of grace)?

Q. Which Bhakti Saint propounded Suddhadvaita Vedanta (Pure non-dualism) and philosophy called Pustimarga (the path of grace)?

A. Ramanuja

B. Ramananda

C. Vallabhacharya

D. Narasi

Answer: Vallabhacharya