Which two components are needed for a service provider to utilize the L3VPN MPLS application? (Choose two)

Which two components are needed for a service provider to utilize the L3VPN MPLS application? (Choose two)
A . The P routers must be configured with RSVP
B . The P routers must be configured for MP-iBGP toward the PE routers
C . The P and PE routers must be configured with LDP or RSVP
D . The PE routers must be configured for MP-eBGP to connect to CEs
E . The PE routers must be configured for MP-iBGP with other PE routers

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Answer: C E