A data center has had a power outage. Which of the following should the administrator do FIRST once the power is restored?

A.
Identify which systems are the most critical and bring them up by level of importance.

B.
Retrieve the latest backup tapes for immediate system restore using the GFS rotation.

C.
Identify the least critical systems and then power those systems on first.

D.
Determine the cause of the power outage and install UPS systems to prevent its reoccurrence.