You are the administrator of a small network supporting Windows NT 4.0 computers. You configure a setup script to automatically upgrade Windows NT Workstation 4.0 computers to Windows 2000 Professional. When you attempt to test the process on a single computer， you receive this error message：  "The specified Setup script file （path：/unattend.txt） is inaccessible or invalid.  Contact your system administrator."    Which action will most likely resolve this error？ （）

• A、Add the UnattendedInstall="Yes" parameter to the [Unattended] section of your Unattend.txt file
• B、Add the UnattendMode=FullUnattended parameter to the [Data] section of your Unattend.txt file
• C、Add the UnattendedInstall="Yes" parameter to the [GuiUnattended] section   of your Unattend.txt file
• D、Add the UnattendMode=FullUnattended parameter to the [Unattended] section of your Unattend.txt file