What are three major features of Cisco Defense Orchestrator? (Choose three.)

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What are three major features of Cisco Defense Orchestrator? (Choose three.)

A. Providing retrospective security to protect against malware
B. Receive notifications about any unplanned changes to security policies and objects
C. Plan and model security changes before deploying them across the cloud
D. Identifying anomalous traffic in customer's network
E. Ability to deploy changes across virtual environments in real time or offline
F. Tracking suspicious files through the network