You are the administrator of ExamSheet.net's network.  Your Windows 2000 Professional computer has a Pentium II 400-MHz processor, 64 MB of RAM, and an IDE hard disk. After installing a new video editing application you notice that yo ur computer is responding very slowly and you are experiencing long delays in processing video files. You want to evaluate the performance of the hard disk to determine if it is a bottleneck. What should you do?（）

• A、Use Task Manager to view the running applications.
• B、Use Task Manager to view the running process.
• C、Use System Monitor to view the physical disk object counters.
• D、Use System Monitor to view the logical disk object counters.