Which of the following Frame-Relay encapsulation commands would you use, if you had to connect your Cisco router to a non-Cisco router?

A.
Router(config-if)# Encapsulation frame-relay aal5snap

B.
Router(config-if)# Encapsulation frame-relay isl

C.
Router(config-if)# Encapsulation frame-relay ietf

D.
Router(config-if)# Encapsulation frame-relay dot1q