You need to design a migration path for migrating user accounts and mailboxes to the new environment. Which two actions should you perform？（）

• A、Use the Migration Wizard to create and migrate mailboxes to Exchange Server 2003
• B、Use Active Directory Users and Computers to move user accounts and mailboxes to the new environment
• C、Use Microsoft Identity Integration Server （MIIS） to synchronize user accounts with the new environment
• D、Use the Active Directory Migration Tool （ADMT） to clone user accounts in Active Directory
• E、Use ClonePrincipal to migrate user accounts to the new environment