Which of the following statements are correct?

A. Kanishka was a follower of Mahayana Buddhism.

B. Buddhist council (Mahasangha) was held in Kashmir.

C. Taxila was built by Kanishka.

D. The stupa in Peshawar was constructed by the Greek architect Agisala.

E. Nagarjuna and Ashvaghosh were contemporaries of Kanishka.

Choose the correct answer from the options given below: