How does the PE router determine the source VSI of this packet?

On a VPLS network a PE router receive a packet that containers layer 2 user data from a PE .

How does the PE router determine the source VSI of this packet?
A . Outer label of the packets
B . Destination MAC address in the L2 PDU encapsulation in the packet
C . MAC address and VLAN ID in the PDU encapsulated in the packet
D . Inner label of the packet

View Answer

Answer: D