The correct option is B Banabhatta
As North India reverted to small republics and small monarchical states ruled by Gupta rulers after the fall of the prior Gupta Empire, Harsha united the small republics from Punjab to central India, and their representatives crowned him king at an assembly in April 606 giving him the title of Maharaja.
Harsha established an empire that brought all of northern India under his control. The peace and prosperity that prevailed made his court a center of cosmopolitanism, attracting scholars, artists and religious visitors from far and wide. The Chinese traveler Heun Tsang visited the court of Harsha, and wrote a very favourable account of him, praising his justice and generosity.