A customer has a data and VoIP converged network and would like to add video to this network. Which two key QoS elements

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A customer has a data and VoIP converged network and would like to add video to this network. Which two key QoS elements should be included in the new network design? (Choose two.)

A. Configure bandwidth management features to smooth bursty traffic and mitigate end-to-end congestion.
B. Assign a high priority to transactional traffic to maintain quality of business traffic.
C. Keep video traffic on the low latency queue and move voice traffic to a lower-priority queue.
D. Apply bandwidth control features that will guarantee bandwidth for the maximum possible amount of video traffic.
E. Assign both video and voice traffic to use the highest-priority queue.