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

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.