Which QoS technology provides a strict priority queuing scheme that allows delay-sensitive data such asvoice to be dequeued and sent before packets in other queues are dequeued, and also works with WFQand CBWFQ.

Which QoS technology provides a strict priority queuing scheme that allows delay-sensitive data such asvoice to be dequeued and sent before packets in other queues are dequeued, and also works with WFQand CBWFQ.
A. header compression
B. IP RTP Priority and Frame Relay IP RTP Priority
C. RSVP
D. low latency queuing
E. FRF.12