What are the steps for configuring stateful NBAR for dynamic protocols？（）
A. Use the command ip nbar protocol-discovery to allow identification of stateful protocols. Use the command ip nbar port-map to attach the protocols to an interface.
B. Use the command match protocol rtp to allow identification of real-time audio and video traffic. Use thecommand ip nbar port-map to extend the NBAR functionality for well-known protocols to new port numbers.
C. Use the command match protocol to allow identification of stateful protocols. Use the command ip nbar port-map to attach the protocols to an interface.
D. Configure a traffic class. Configure a traffic policy. Attach the traffic policy to an interface.
E. Configure video streaming. Configure audio streaming. Attach the codec to an interface.
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