Which of the following universities in ancient India attained celebrity as the seat of both Brahmanical and Buddhist learning during the time of Siddha Nagarjuna?

Sridhanya Katak, the ancient Sri Dhanyakataka near Amaravati, won fame as a seat of both Brahmanical and Buddhist learning in the time of Siddha Nagarjuna.

It was closely associated with Nagarjuna and the Madhyamaka tradition of Buddhist thought.

Nalanda was a great monastic university but is not the centre linked to Nagarjuna in this description.

Takshashila was an earlier north-western centre unconnected to Sridhanya Katak.

Dharmaganja was the famous library complex within Nalanda rather than a separate university.

The Amaravati region became a major hub of early Buddhist learning and art.