If an XtremIO Cluster Has Been Shut Down as a Result

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.