Youneedtodesignsecuritychangesthatprovidemaximumprotectionforcustomerdataandcourierassignments.Whatshouldyoudo?()

A.Createaseparatedomainforcourierauthentication

B.Implementsmartcardauthenticationforbusinessofficeusersandcouriers，upgradingclientoperatingsystemsasneeded.ModifytheWebkioskstorequiresmartcardpresenceforcontinuedaccess

C.ModifytheDefaultDomainPolicyGroupPolicyobject（GPO）sothatcouriersmustusecomplexuseraccountpasswords.RequireallcourierstochangetheirpasswordsthenexttimetheylogontotheWebapplication

D.UseEncryptingFileSystem（EFS）toencryptallfilesthatcontaincustomerdata