An administrator setting up software RAID 1 on a Windows Server with two volumes for two separate hard drives, but the option for mirrored is grayed out. Which of the following is the likely reason why this is occurring?（）

• A、The disks have been setup as basic.
• B、The page file must be at least 4GB to support mirrored drives.
• C、The disks have been setup as dynamic.
• D、Windows does not support software RAID 1.