Which two facts apply to traffic policing?

An engineer is describing QoS to a client.

Which two facts apply to traffic policing? (Choose two.)
A . Policing should be performed as close to the source as possible.
B. Policing adapts to network congestion by queuing excess traffic.
C. Policing should be performed as close to the destination as possible.
D. Policing drops traffic that exceeds the defined rate.
E. Policing typically delays the traffic, rather than drops it.

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Answer: AD