What are two purposes of using IPv4 and VPNv4 address-family configurations in a Layer 3 MPLS VPN? 4 B* B1 e$ X3 M$ x) l(Choose two.) 7 X7 l& z! {' w" D9 hA. The VPNv4 address consists of a 64-bit route distinguisher that is prepended to the lPv4 prefix. 3 J% X% e. S+ vB. MP-BGP is used to allow overlapping lPv4 addresses between customers to advertise through the - x+ x1 F8 @; }7 Fnetwork. 5 A( p6 z0 _. u' l- ~3 bC. RD is prepended to the lPv4 route to make it unique. 6 m4 H/ s1 r0 E7 C5 x6 k* OD. The VPNv4 address is used to advertise the MPLS VPN label. 5 d7 j( E f; A& {E. The lPv4 address is needed to tag the MPLS label.