Why are RD and VPNv4 addresses used in an MPLS L3 VPN? (Choose two.)

In MPLS L3 VPNs, multiple customers can use the same IP address space, leading to overlapping routes. To differentiate these routes, a Route Distinguisher (RD) is prepended to each customer prefix by the Provider Edge (PE) router. This creates a unique VPNv4 address (RD:IPv4 prefix), ensuring that even if two customers use the same 10.0.0.0/8 network, their routes are distinct within the MPLS backbone. This uniqueness is crucial when the PE redistributes customer routes into Multiprotocol BGP (MP-BGP), which is used to exchange VPNv4 routes between PE routers. Without RDs, MP-BGP would see duplicate routes and wouldn't know which customer they belonged to. VPN RT communities are used for route import/export policies, not for making routes unique. RDs and VPNv4 addresses are internal to the MPLS network and are not used for BGP sessions with CE devices or for static CE configurations.