Which three statements about BGP confederation and route reflectors are true? (Choose three)
A.
Clusters are used in confederation schemes to avoid loops.
B.
BGP network can have a confederation within a route reflector area.
C.
An internal BGP network cannot have a route reflector within a confederation.
D.
An internal BGP network can have a route reflector within a confederation.
E.
Clusters are used in route reflector schemes to avoid loops.
F.
BGP network cannot have a confederation within a route reflector area.