What Are Two Purposes of Using IPv4 and VPNv4 Address-Family

What are two purposes of using IPv4 and VPNv4 address-family configurations in a Layer 3 MPLS VPN? (Choose two.)

A) RD is prepended to the IPv4 route to make it unique.
B) The VPNv4 address consists of a 64-bit route distinguisher that is prepended to the IPv4 prefix.
C) MP-BGP is used to allow overlapping IPv4 addresses between customers to advertise through the network.
D) The IPv4 address is needed to tag the MPLS label.
E) The VPNv4 address is used to advertise the MPLS VPN label.