You have a server that runs Windows Server 2012 R2. The server contains the disks configured as shown in the following table. You need to create a volume that can store up to 3 TB of user files. The solution must ensure that the user files are available if one of the disks in the volume fails. What should you create？（）
- AA mirrored volume on Disk 1 and Disk 4
- BA storage pool on Disk 2 and Disk 3
- CA storage pool on Disk 1 and Disk 3
- DA mirrored volume on Disk 2 and Disk 3