If an XtremIO cluster has been shut down as a result of a power loss to the data center, how should you proceed with restoring cluster service?

If an XtremIO cluster has been shut down as a result of a power loss to the data center, how should you proceed with restoring cluster service?
A . Cluster services automatically restart when power is restored to the data center. No administrative action is needed.
B . Cluster services must be manually restarted using the start-cluster XMCLI command once power is restored to the data center.
C . The Battery Backup Units, Storage Controllers, and XMS must be rebooted in order for cluster services to be restored.
D . Only the XMS and Storage Controllers must be rebooted in order for cluster services to be restored.

Answer: A