What configuration command allows the ERX Edge Router to advertise customer networks into the provider’s IGP？（）

A.It burns IP addresses.
B.It conserves IP addresses.
C.Both the client and the ERX Edge Router have IP addresses.
D.The client has an IP address， but the ERX Edge Router uses an unnumbered address.

A.static
B.OSPF
C.RIPv1
D.RIPv2

A.It burns up IP addresses.
B.It conserves IP addresses.
C.It results in a smaller routing table.
D.The group of PVCs is treated as a large LAN.