When using MPLS on an MPLS aware ATM network, which two statements are true? (Choose two)

A.
VPI and VCI are used as labels.

B.
PVCs must be manually created between end devices.

C.
The ATM devices become aware of Layer 3 by running a Layer 3 routing protocol.

D.
When running BGP, it is no longer necessary to establish logical connection between BGP neighbors.