Which statement is correct?

A.
Cisco CGS 2520 switches support advanced QOS functionality for proper handling of all station
bus traffic.

B.
Cisco CGS 2520 switches do not support any QoS function.

C.
Cisco CGS 2520 switches support advanced QoS functionality for proper handling of all traffic.

D.
Cisco CGS 2520 switches support advanced QoS functionality for proper handling of SCADA
traffic.