The correct option is D Aryabhatta
Aryabhatta was an astronomer and mathematician while others were physicians. Charaka was a great physician during the rule of Kanisha was also known for his work Charaka-Samhita. Charaka also taught at Takshshila. Vrihad Vaghabhatta was one of the greatest physicians during the Gupta era. His treatise, Ashtanghirdaya built on the works of Charaka. Sushruta Samhita is also another notable work on Ayurveda. Dhanavantari was also a notable physician in Ayurveda.