A) The stand-alone server in the Windows NT 4.0 domain that will become the root domain in your Windows 2000 network
B) The primary domain controller (PDC) in the Windows NT 4.0 domain that will become a child domain in your Windows 2000 network
C) The backup domain controller (BDC) in the Windows NT 4.0 domain that will become a child domain in your Windows 2000 network
D) The Primary domain controller (PDC) in the Windows NT 4.0 domain that will become the root domain in your Windows 2000 network