You want to upgrade 400 computers from Windows 95 to Windows 2000 Professional. Most of the computers in your company use the same hardware.  However， several different peripheral devices are used throughout the company. You want to verify that the hardware in use is compatible to Windows 2000 Professional. You want to accomplish this with least amount of administrative effort.  What should you do？（）

• A、 Create several different computer configurations. Install Windows 2000 Professional and enable driver signing.
• B、 Create a bootable floppy disk that contains and automatically runs winNT32.exe/checkupgradeOnlyQ. Send the floppy disk to each user on the network.
• C、 Copy the contents of Windows 2000 Professional CD-ROM to a network share. From the network， modify your network logon scripts to run WinNT32.exe/Unattended：ReportOnly.
• D、 Use setup manager to create a setup.inf file. Add the entry ReportOnly=Yes to the [Win9xUpg] section of the answer file. Run Winnt32.exe/unattended.setup.inf on all of the different computer configurations.