Which two statements about BGP loop prevention are true?

Which two statements about BGP loop prevention are true? (Choose two.)

A.
Advertisements from PE routers with per-neighbor SOO configured include a Site of Origin value
that is equal to the configured value of the BGP peering.

B.
If the configured Site of Origin value of a BGP peering is equal to the Site of Origin value on a
route it receives, route advertisement is blocked to prevent a route loop.

C.
AS-override aids BGP loop prevention, but alternate loop prevention mechanisms are also
necessary.

D.
Advertisements from the neighbors a BGP peering include a Site of Origin value that is separate
from the configured value of the BGP peering.

E.
If the configured Site of Origin value of a BGP peering is greater than the Site of Origin value on a
route it receives, route advertisement is blocked to prevent a route loop.

F.
If the configured Site of Origin value of a BGP peering is equal to the Site of Origin value on a route
it receives, route advertisement is permitted.