The correct option is A Varahamihira
Chandragupta-II was known for his deep interest in art and culture and 9 Navratnas adorned his court.
Amarsimha, Dhanvantri, Harisena, Kalidasa, Kshapanaka, Sanku, Varahamihira, Vararuchi and Vetalbhatta were the 9 Navratnas.