You are the network administrator for. You administer a Windows Server 2003 computer named TestKing4. TestKing4 has a single physical disk that is configured as a simple volume. You plan to store the files for a large database on TestKing4. You plan to install additional physical disks on TestKing4. You need to reconfigure the disks on TestKing4. Your solution must provide fault tolerance for the operating system and the database files. Which two actions should you perform?（） (Each correct answer presents part of the solution. Choose two.)

• A、Install three additional physical disks. Create a new RAID-5 volume. Place the database files on the new volume.
• B、Install three additional physical disks. Create a new striped volume. Place the database files on the new volume.
• C、Install one additional physical disk. Configure the simple volume as a mirrored volume.
• D、Install one additional physical disk. Configure the simple volume as a spanned volume.