You manage several computers that run Windows 7. A user wants to roll back a driver. The user opens thedevice properties in Device Manager and discovers that the Roll Back Driver option is unavailable. Youconnect to the computer by using Windows Remote Assistance. You need to roll back the driver to itsprevious version. What should you do first?（）

A、Add&ensp;the&ensp;user&ensp;to&ensp;the&ensp;Power&ensp;Users&ensp;group.

B、Right-click&ensp;Device&ensp;Manager&ensp;and&ensp;select&ensp;Run&ensp;as&ensp;administrator.

C、From&ensp;System&ensp;Properties，&ensp;modify&ensp;Device&ensp;Installation&ensp;Settings.

D、From&ensp;the&ensp;Local&ensp;Group&ensp;Policy，&ensp;modify&ensp;Device&ensp;Installation&ensp;Restrictions.

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答案解析