Correct Option: D

Vikramshila Mahavihar was established by the ruler of pala dynasty. Pala dynasty was the ruling dynasty in Bihar and Bengal, from the 8th to the 12th century. Called the Palas because all their names ended in Pala, "protector", the Palas rescued Bengal from the chaos into which it had fallen after the death of Shashanka, a rival of Harsha of Kanauj. The founder of the dynasty was Gopala.