How does LLQ ensure that voice traffic is always expedited?

How does LLQ ensure that voice traffic is always expedited?
A. LLQ adds WRED to CBWFQ. This allows delay-sensitive data such as voice to be dequeued and sent first.
B. LLQ uses CBWFQ to prioritize voice traffic and by dequeuing the voice packets so they can be handled first.
C. The strict priority queue has a higher weight than the queues in CBWFQ. This weight allows the 45 Cisco 642-437 Exam delay-sensitive data such as voice to be dequeued and sent first.
D. The LLQ strict priority queue allows delay-sensitive data such as voice to be dequeued and sent first (before packets in other queues are dequeued), giving delay-sensitive data preferential treatment over other traffic.

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