You want to upgrade 150 computers from Windows NT Workstation 4.0 to Windows 2000 Professional.You create an Unattend.txt file by using Setup Manager. You copy the file to a floppy disk.You then start the installation on a test computer by using the Windows 2000 Professional CD-ROM.You insert the floppy disk after the computer starts.Although you had set the user interaction level to full unattended mode, you are prompted for all the required parameters. You want to ensure that the unattended installation does not prompt you for input.What should you do?

C
解析：Explanation: When booting the computer from the CD-ROM, and then using an answer file from a floppy disk, the answer file must be named Winnt.sif.Incorrect answers:A: A [data] section must be added to the unattend.txt file, and the unattendedinstall Parameter must be set to YES. However, the answer file must be named winnt.sif, as it is located on the diskette.B: An [Unattend] section in the answer file has already been created by the Setup Manager.D: The unattend.txt file must be located on a diskette, and it must be named winnt.sif. It should not be copied to a folder named $OEM$ on the hard drive.