YouhaveacomputerthatrunsWindows7.Auserinstallsathird-partymediaplayeronthecomputer.Youdiscoverthatallmediafilesautomaticallyopenbyusingthethird-partymediaplayer.YouneedtoensurethatallmediafilesopenautomaticallybyusingWindowsMediaPlayer.Youmustachievethisgoalbyusingtheminimumamountofadministrativeeffort.Whatshouldyoudo?（）
A.Selectamediafile.Right-clickthefileandselectOpenwith.
B.Selectamediafile.Right-clickthefileandselectRestorepreviousversions.
C.FromControlPanel，modifytheSetyourdefaultprogramssettings.
D.FromControlPanel，modifytheSetprogramaccessandcomputerdefaultssettings.
参考答案：C
