MPLS can be run over ATM PVC’s, perhaps as a first step in migration to an MPLS infrastructure.
What is NOT true about this function?

A.
There can be one LSP per ATM PVC.

B.
The ATM network does not have to run MPLS.

C.
The ATM PVC is considered as a frame mode MPLS interface.

D.
LDP runs between adjacent routers either side of the PVC.

Explanation:

ATM is considered to be cell-mode