Which command enables Frame Relay to forward frames from the attachment circuit over the emulated session in regular Cisco IOS Software?

A network engineer is tasked to implement an AToM VPN for a given customer to emulate a
Frame Relay virtual circuit over the MPLS-enabled core network. Which command enables Frame
Relay to forward frames from the attachment circuit over the emulated session in regular Cisco
IOS Software?

A.
ip route 0.0.0.0 0.0.0.0 tailend_router_ip

B.
encapsulation frame-relay

C.
frame-relay switching

D.
frame-relay intf-type dce