Users at the Charleville Company began experiencing high network delays when Internet connectivity was enabled for all users. After investigating the traffic flow, you determine that peerto-peer traffic from a music download site is consuming a large amount of bandwidth. Which QoS mechanism can you implement to improve the network response time?（）

• A、Use CBWFQ to queue the peer-to-peer traffic into the default traffic class.
• B、Use class-based WRED to randomly drop the peer-to-peer traffic during network congestions.
• C、Use class-based policing to limit the peer-to-peer traffic rate.
• D、Use class-based shaping to delay any excessive peer-to-peer traffic.