You are the network administrator for . You administer a Windows Server 2003 computer named TestKing7. Users report that they experience poor performance when they access resources located on TestKing7. You suspect a disk bottleneck. You need to set up performance counters to monitor TestKing7. You need to decide which performance objects to monitor. Which two counters should you choose? （）(Each correct answer presents part of the solution. Select two.)

• A、LogicalDisk/%IdleTime
• B、PhysicalDisk/%DiskTime
• C、PhysicalDisk/Avg.DiskQueueLength
• D、Memory/WriteCopies/sec
• E、Memory/CommitLimit