What is true about OSPF running between PE and CE routers?
A.
Extra configuration is required to pass the OSPF route attributes from OSPF to MP-BGP.
B.
OSPF route attributes are carried as extended BGP attributes into MP-BGP.
C.
Extra configuration is required to pass the OSPF route attributes from MP-BGP to OSPF.
D.
Routes redistributed from MP-BGP to OSPF automatically maintain OSPF route attributes.
Explanation: