Which two statements are correct in describing ISP environments that are running IP/MPLS in the
core network? (Choose two.)

A.
On the PE routers, each BGP route must use a unique label to reach the BGP next hop.

B.
The BGP next hops point to the PE routers, and only the PE routers are required to run BGP.

C.
A full mesh of IBGP sessions are required between all of the PE and P routers to ensure proper
packets forwarding.

D.
The PE and P routers run LDP to learn the labels for reaching the BGP next-hop addresses.

Explanation: