Refer to the exhibit. A customer needs to apply QoS to the network management traffic passing through the GigabitEthernet 0/2 interface. All eight queuing class...

Refer to the exhibit. A customer needs to apply QoS to the network management traffic passing through the GigabitEthernet 0/2 interface. All eight queuing classes are in use, so the new requirement must be integrated into the existing policy. Which solution must the customer choose?

A. Mark the traffic to DSCP CS6 and assign it to the ROUTING class. Then, prioritize traffic within the class. B. Mark the traffic to DSCP CS2 and assign it to the ROUTING class. Then, baseline existing queue sizes to determine if additional bandwidth can be provisioned to the ROUTING class. C. Mark the traffic to DSCP CS4 and assign it to the SIGNALLING class. Then, prioritize traffic within the class. D. Mark the traffic to DSCP CS5 and assign it to the SIGNALLING class. Then, baseline existing queue sizes to determine if additional bandwidth can be provisioned to the SIGNALLING class.