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 functional level of the forest and domain are set at Windows Server 2003.The Company.com organization makes use of 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 start transitioning Exchange Server 2003 to Exchange Server 2010 whilst preparing the Active Directory environment for the deployment of Microsoft Exchange Server 2010.What should you do？（）

• A、You should consider having the setup.com /PrepareLegacyExchangePermissions command run.
• B、You should consider having the setup.com /PrepareSchema command run.
• C、You should consider having the setup.com /PrepareAD command run.
• D、You should consider having the setup.com /PrepareDomain command run.