Which answer about PE-CE routing design is correct in a Layer 3 MPLS VPN environment?
A . EIGRP has the built-in capability to stop a routing loop when there is a backdoor link between the CE routers.
B . BGP, along with SoO, can stop the routing loop when there is a backdoor link between the CE routers.
C . OSPF does not support a PE-CE design when there is a backdoor link between the CE routers.
D . EIGRP does not support a PE-CE design when there is a backdoor link between the CE routers.
Answer: B