What is a good definition of Cisco’s implementation of an ATM Virtual Path as related to LC-ATM MPLS support?

What is a good definition of Cisco’s implementation of an ATM Virtual Path as related to LC-ATM MPLS support?

A.
Designed to establish switch-to-switch connectivity between parts of a public ATM network over a private network.

B.
Designed to establish switch-to-switch connectivity between parts of a private ATM network over a public network.

C.
Designed to establish router-to-router connectivity between parts of a private ATM network over a public network.

D.
Designed to establish router-to-router connectivity between parts of a public ATM network over a private network.