YouhaveasingleActiveDirectorydomain.AlldomaincontrollersrunWindowsServer2003withServicePack1（SP1）.YouplantostoreWindowsBitLockerDriveEncryptionrecoverypasswordsinActiveDirectory.Youneedtorecommendthesolutionthatusestheleastamountofadministrativeeffort.Whatshouldyourecommend？（）
A.ExtendtheActiveDirectoryschema.
B.UpgradealldomaincontrollerstoWindowsServer2008R2.
C.UpgradealldomaincontrollerstoWindowsServer2003SP2.
D.UpgradethedomaincontrollerthathastheroleofoperationsmastertoWindowsServer2008R2.
参考答案：A
