To ensure ProfiNET Layer 2 Class-of-Service markings from ProfiNET devices are trusted
by the switch, which command must be entered on the interface attached to the device?

A.
switch(config-if)#mls qos trust cos

B.
switch(config-if)#qos trust cos

C.
switch(config-if)#profinet cos trust

D.
switch(config-if)#trust qos cos