Layer 3 VPN is the primary service running on your network. You have POP locations and recently you have seen memory and CPU utilization go above 90% in two out put of four PE devices in one POP location. You have maximum-route-limit configured for each VPN. What additional parameter should be monitored proactively to address these issues?

A.
Number of prefixes per VRF route in the router

B.
Number of VRFs configured on each Router

C.
Number of route targets for each VRF

D.
LDP neighbor statistics for any flaps

E.
Packets in and out for each VRF