An administrator is building a server that will run a data warehousing application.The server was ordered with eight 300GB drives.The application requires a dedicated storage location for the OS and one for critical files.The critical file storage needs fast access but must provide high redundancy.The OS requires 100GB and the file requires 950GB.Which of the following configurations will BEST suit the data warehouse needs？（）

• A、OS：3 Drives，RAID 1 with hot spare；Files：5 Drives，RAID 5 with hot spare
• B、OS：2 Drives，RAID 1；Files：6 Drives，RAID 1
• C、OS：2 Drives，RAID 0；Files：6 Drives，RAID 5
• D、OS：2 Drives，RAID 1；Files：6 Drives，RAID 5 with hot spare