Brocade Exam Questions

What are two explanations for this?

During a BGP neighboring session, a Brocade router remains in the active state.
What are two explanations for this? (Choose two.)

A.
TCP port 179 is not open.

B.
The peer address is configured incorrectly on either router.

C.
A random TCP port over 1023 is not open.

D.
The AS number is configured incorrectly on either router.