Which three of these statements describe a transit AS? (Choose three.)

A.
It uses recursive routing lookup when forwarding packets toward external destinations.

B.
Core IGP stability can be improved using BGP route dampening.

C.
All core routers run IBGP and IGP.

D.
Core IGP can be scaled using route reflectors.

E.
It uses IGP routing information to reach the BGP next-hop.

F.
BGP split horizon and synchronization are disabled.