You are the network administrator for The network consists of a single Active Directory domain named All network servers run Windows Server 2003. A member server named TK1 contains a single SCSI hard disk. Users report that server performance is slow. You configure System Monitor to report performance values for TK1 at regular intervals. System Monitor reports the following values over six 30-second intervals. You need to improve disk performance. What should you do?（）
- A Replace the existing hard disk with a striped volume that uses disks with performance characteristics similar to those of the existing hard disk.
- B Replace the existing hard disk with a RAID-5 disk array that uses disks with performance characteristics similar to those of the existing hard disk.
- C Use Disk Management to clear the Compress drive to save disk space option on the dynamic volume.
- D Use Disk Management to disable write caching on the physical disk.