Which statement is correct?

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.