There is a power outage at a company during the night, and the power is restored the next morning. Upon bootup, the server starts performing file system integrity checks. Which three are possible causes of this anomaly? (Select THREE)

A.
The UPS (Uninterruptible Power Supply) VA rating was too low for the server.

B.
There was a communication error between the UPS (Uninterruptible Power Supply) and the servers when they lost power.

C.
There was a battery fault with the UPS (Uninterruptible Power Supply).

D.
The servers were performing a backup of data when they lost power.