Which two actions are performed by the Weighted Random Early Detection mechanism? (Choose two.)

Which two actions are performed by the Weighted Random Early Detection mechanism? (Choose two.)

A. It supports protocol discovery. B. It guarantees the delivery of high-priority packets. C. It can identify different flows with a high level of granularity. D. It can mitigate congestion by preventing the queue from filling up. E. It drops lower-priority packets before it drops higher-priority packets.