Refer to the exhibit. P3 and PE4 are at the edge of the service provider core and serve as ABR routers. Aggregation areas are on either side of the core.Which s...

Refer to the exhibit. P3 and PE4 are at the edge of the service provider core and serve as ABR routers. Aggregation areas are on either side of the core.Which statement about the architecture is true?

A. To support seamless MPLS, the BGP route reflector feature must be disabled. B. If each area is running its own IGP, BGP must provide an end-to-end MPLS LSP. C. If each area is running its own IGP, the ABR routers must redistribute the IGP routing table into BGP. D. To support seamless MPLS, TDP must be used as the label protocol.