Which action must be taken to determine if a human intervention introduced the change?

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?
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 CL

Answer: A