Which description of BGP authentication is true?

A.
MD5 has been used by BGP to encrypt BGP update packets.

B.
BGP uses a message-digest algorithm to authenticate BGP peers

C.
A plain-text password authentication is an option of BGP authentication

D.
EBGP peers authentication is faster than IBGP peers authentication

E.
BGP uses public key and private key to authenticate BGP peers.

Explanation:
BGP Authentication
BGP supports MD5 authentication between neighbors, using a shared password. It is configured
under BGP router configuration mode with the command neighbor {ip-address | peer-group-name}
password password.
When authentication is configured, BGP authenticates every TCP segment from its peer and
checks the source of each routing update. Most ISPs require authentication for their EBGP peers.