Correct Option: D

Sanskrit was the official language of Gupta period. Scholars of this period include Varahamihira and Aryabhatta, who is believed to be the first to come up with the concept of zero, postulated the theory that the Earth moves round the Sun, and studied solar and lunar eclipses. Kalidasa, who was a great playwright, who wrote plays such as Shakuntala, which is said to have inspired Goethe, and marked the highest point of Sanskrit literature is also said to have belonged to this period.