When You Design a Network, When Would It Be Required

Multiple Choice

When you design a network, when would it be required to leak routes into a Level 1 area?

A) when a multicast RP is configured in the nonbackbone area
B) when MPLS L3VPN PE devices are configured in the Level 1 areas
C) when equal cost load balancing is required between the backbone and nonbackbone areas
D) when unequal cost load balancing is required between the backbone and nonbackbone areas