You have a customized image of Windows 7 Professional. You need to create a new unattended file toautomate the deployment of the image. You must achieve this goal by using the minimum amount ofadministrative effort.  What should you do first?（）

• A、Run Imagex.exe and specify the /mount parameter.
• B、Run Dism.exe and specify the /mount-WIM parameter.
• C、From Microsoft Deployment Toolkit （MDT）， add the custom Windows image （WIM）.
• D、From Windows System Image Manager （Windows SIM）， open the custom Windows image （WIM）.