Which statement is correct about transit AS and iBGP?
A. The iBGP full mesh is a physical full mesh of all the routers within a transit AS.
B. The iBGP full mesh is a logical mesh of TCP sessions.
C. Transit AS running full-mesh iBGP requires synchronization to be enabled.
D. Transit AS running full-mesh iBGP requires next-hop-self to be enabled on all the core routers.
E. iBGP neighbors within a transit AS must be directly connected to each other.
F. To prevent routing loops within a transit AS, eBGP updates are not propagated to iBGP peers.
