Correct Option: B

As mentioned by Hiuen Tsang, 10,000 students were studying in the Nalanda University. Founded in the 5th Century AD, Nalanda is known as the ancient seat of learning. 2,000 teachers and 10,000 students from all over the Buddhist world lived and studied at Nalanda, the first Residential International University of the world. A walk in the ruins of the university, takes you to an era, that saw Indian leading in imparting knowledge, to the world- the era when India was a coveted place for studies. The University flourished during the 5th and 12th century.