Which statements from below are correct?

A. A Buddhist believes in the three jewels Buddha, Dhamma and Samgha to seek nirvana.

B. Sariputra and Tathagata are two different people.

C. Both the Theravadins and Mahayanist believe in the teachings of the Buddha.

D. The Buddha delivered his first sermon in Bodhagaya.

E. Ashoka's Lion Capital was first installed in Sarnath, near Varanasi.

Choose the correct answer from the options given below: