YouhaveanExchangeServer2010organization.Yourcompanyhasarelationshipwithanothercompany.ThepartnercompanyhasanExchangeServer2010organization.Youneedtorecommendasecuritysolutiontomeetthefollowingrequirements：.Ensurethatalle-maildeliverybetweenyourserversandthepartnercompanysserversisencrypted.EnsurethatallcommunicationbetweenyourserversandthepartnercompanysserversisauthenticatedWhatshouldyouincludeinthesolution？（）
A.ActiveDirectoryRightsManagementServices（ADRMS）
B.DomainSecurity
C.Forms-basedAuthentication
D.Secure/MultipurposeInternetMailExtensions（S/MIME）