Which two statements are true about the label stack used for MPLS VPNs? (Choose two)

A.
The first label in the label stack is the VPN label assigned by the egress PE router.

B.
The first label in the label stack is the LDP label used to reach the egress PE router.

C.
The first label in the label stack is the VPN label used to reach the egress PE router.

D.
The second label in the label stack is the VPN label assigned by the egress PE router.

E.
The second label in the label stack is the LDP label used to each the egress PE router.

F.
The second label in the label stack is the VPN label assigned by the ingress PE router and tells
the ingress
PE router how to forward the incoming VPN packet.

Explanation: