Which Statement Is Correct About the Frame Relay Technology

Multiple Choice

Which statement is correct about the Frame Relay technology?

A) It uses switched virtual circuits for data delivery.
B) It is a technology designed for the leased line WAN service.
C) It comes with an error discovery and recover function during packet delivery.
D) Its frames have a high overhead and thus slow in the delivery of WAN frames.
E) It is much used for "both" data and voice services.