Your network consists of a single Active Directory domain. You have 10 file servers that run Windows Server 2003 Service Pack 2 （SP2）.You need to monitor the bandwidth usage on all the file servers from a central location. What should you do？（）

• A、Open the Shared Folders snap-in on one of the servers. Examine the Sessions folder.
• B、Install Simple TCP/IP Services on all file servers. From one of the servers， run Netcap.exe.
• C、Install Network Monitor Tools on all file servers. From one of the servers， create a new capture.
• D、Open the Performance Logs and Alerts snap-in on one of the servers and create a new counter log.