Examine the CREATE DISKGROUP command used to create a disk group: In which situation would you use this method of disk group creation?（）

• A、When two-way disk mirroring is required for the allocation units
• B、When three-way disk mirroring is required for the allocation units
• C、When using hardware mirroring or RAID
• D、When disk mirroring is required for the Automatic Storage Management (ASM) disks