For a Carrier Supporting Carrier (CSC) VPRN where the customer carrier is a BGP/MPLS VPN Service Provider (SP), which of the following is FALSE?

For a Carrier Supporting Carrier (CSC) VPRN where the customer carrier is a BGP/MPLS VPN Service Provider (SP), which of the following is FALSE?
A . The customer carrier network can be a pure IP network.
B. The customer carrier provides Layer 2 and Layer 3 services to its end-customers.
C. A single CSC VPRN is configured on the network provider to support all services offered by the customer carrier.
D. In the case where the customer carrier offers VPRN services, the model is referred to as hierarchical VPRN.

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Answer: A