You work as a network Exchange administrator at Company.com.The Company.com network currently consists of a single Active Directory forest containing a single domain named Company.com.The Company.com organization makes use of Microsoft Exchange Server 2000 and Microsoft Exchange Server 2003 Service Pack 2 （SP2） as their messaging solution.During the course of the business week you receive instruction from Company.com to transition the Exchange organization to Microsoft Exchange Server 2010 whilst preparing the Exchange organization for the deployment of the Exchange Server 2010 Hub Transport servers， Client Access and Mailbox servers.What should you do？（）

• A、You should consider having the Microsoft Exchange Server 2010 Edge Transport server deployed first.
• B、You should consider having the Microsoft Exchange Server 2000 servers removed from the organization first.
• C、You should consider having the Active Directory Connector （ADC） installed first.
• D、You should consider having the Recipient Update service （RUS） objects deleted first.