Correlation policy rules allow you to construct criteria for alerting on very specific conditions. Which option is an ex

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Correlation policy rules allow you to construct criteria for alerting on very specific conditions.
Which option is an example of such a rule?

A. testing password strength when accessing an application
B. limiting general user access to administrative file shares
C. enforcing two-factor authentication for access to critical servers
D. issuing an alert if a noncompliant operating system is detected or if a host operating system changes to a noncompliant operating system when it was previously profiled as a compliant one