An ACI administrator notices a change in the behavior of the fabric. Which action must be taken to determine if a human intervention introduced the change? 

Answer options:

A. Inspect event records in the APIC UI to see all actions performed by users.
B. Inspect /var/log/audit_messages on the APIC to see a record of all user actions.
C. Inspect audit logs in the APIC UI to see all user events.
D. Inspect the output of show command history in the APIC CLI.

A