You are preparing to transition from Exchange 2000 Server to Exchange Server 2007. The environment consists of a single Windows 2000 native mode Active Directory domain and an Exchange 2000 organization running in mixed mode. The schema master, domain naming master, and PDC emulator all run on a Microsoft Windows 2000 Server domain controller. You need to prepare the environment for Exchange 2007. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A.
Move the PDC emulator role to a domain controller that runs Windows Server 2003 with Service Pack 1

B.
Move the schema master role to a domain controller that runs Windows Server 2003 with Service Pack 1

C.
Move the domain naming master role to a domain controller that runs Windows Server 2003 with Service Pack 1

D.
Convert the Exchange 2000 organization to native mode