You need to design a migration strategy to migrate the Exchange Server 5.5 mailboxes. What should you do？（）

• A、Create and configure a one-way recipient connection agreement from Active Directory to Exchange Server 5.5
• B、Create and configure a configuration connection agreement between Exchange Server 5.5 and Active Directory
• C、Create and configure an inter-organizational recipient connection agreement from Exchange Server 5.5 to Active Directory
• D、Create and configure a two-way recipient connection agreement between Exchange Server 5.5 to Active Directory
• E、Use Microsoft Identity Integration Server （MIIS） to synchronize objects between Exchange Server 5.5 and Active Directory