Which sentences use a time-related term correctly?

Question

Choose all answers that are correct.


A.
Confucius was teaching in China in B.C. 500.

B.
The Roman Empire fell to Germanic Tribes in A.D. 476.

C.
Homer composed the Iliad and Odyssey in about B.C.E. 750.

D.
The Black Death began in Europe in 1347 C.E.

Answer 1

And you think ... ?

(Correct according to whom?)