Yournetworkconsistsof1，000clientcomputersthatrunWindowsXP.ThecomputersdonothaveaccesstotheInternet.Youplantomigrate200ofthecomputersimmediatelytoWindows7.Theremainderwillbemigratedoverthenextseveralmonths.Youneedtoplanthemostefficientmethodforactivatingallofthecomputers.Whatshouldyoudo？（）
A.UsetheKeyManagementService（KMS）forallthecomputers.
B.UseMultipleActivationKey（MAK）Independentforallthecomputers.
C.UseMultipleActivationKey（MAK）Proxyforthefirst200computers，andthenusetheKey ManagementService（KMS）fortheremainingcomputers.
D.UseMultipleActivationKey（MAK）Independentforthefirst200computers，andthenuseMultipleActivationKey（MAK）Proxyfortheremainingcomputers.
参考答案：A
