Which statement is true about the Cisco Self-Defending Network?

Which statement is true about the Cisco Self-Defending Network?

A.
The Cisco Self-Defending Network defines the physical position of the firewall to protect against internal and external attacks

B.
The Cisco Self-Defending Network Provides static filtering against known and unknown internal and external attacks

C.
The Cisco Self-defending Network Provides dynamic protection against known and unknown internal and external attacks

D.
The Cisco Self-defending Network Provides the Elements to install the antivirus software on the End-User Workstation