Which technology, implemented on aggregation-edge nodes at the aggregation layer, provides per-tenant isolation at Layer 3, with separate dedicated per-tenant routing and forwarding tables on the inside interfaces of firewall context?

Which technology, implemented on aggregation-edge nodes at the aggregation layer, provides per-tenant isolation at Layer 3, with separate dedicated per-tenant routing and forwarding tables on the inside interfaces of firewall context?
A . VRF-Lite
B . VLAN
C . VDC
D . VXLAN

Answer: A