Which reason do you make this decision?

After you analyze your network environment, you decide to implement a full separation model for Internet access and MPLS L3VPN services.
For which reason do you make this decision?
A. It enables EGP and IGP to operate independently.
B. It enables you to choose whether to separate or centralize each individual service.
C. It is easier to manage a system in which services are mixed.
D. It requires only one edge router.