Which three configuration sections are required on service provider PE routers to enable IPv4 Layer 3 VPN? (Choose three.)
A. Implement MPLSfor all customer-facing links.
B. Configure route targets that are used for importing and exporting customer VRF routers.
C. Advertise customer routes to all PE routers by configuring the IPv4 address-family under the MP-BGP configuration mode.
D. Configure at least one interface that is assigned to a customer link as a member of the VRF
E. Configure the VPNv4 address-family under the MP-BGP configuration mode on the PE routers that participate in the customer VRF routing
F. Configure route distinguishers that are used for importing and exporting customer VRF routes
