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

[answerhappygod]

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.