An organization has Exchange Server 2010 Mailbox Server named Server 1 failed.A new server with Windows 2008 named Server 2.Exchange Server 2010 recovery installation. What should you do before you perform recovery installation？（）

• A、Rename Server1 computer account to Server2.Join Server2 to domain.
• B、Rename Server2 as Server1.Reset the Server1 computer account.Join Server1 to domain.
• C、Delete computer account for Server1.Join Server2 to domain.Rename Server2 as Server1.
• D、Delete computer account for Server1.Rename Server2 as Server1.Create a New Computer account for Server1.Join Server1 to domain.