When using Frame Relay network interworking, what is true for the Switch that performs the Interworking Function?

A.
One side uses native Frame Relay (IETF) and the far side uses native ATM with SNAP or NLPID encapsulation.

B.
Both sides use native Frame Relay

C.
One side expects frames and the other side expects Frame Relay frames segmented into ATM cells (FR-SSCS).

D.
There is no such things as Frame Relay network interworking.

Explanation:
http://www.cisco.com/en/US/products/hw/switches/ps525/products_configuration_guide_chapter09186a00800e c