In which of the following scenarios must you perform a migration rather than an upgrade? Choose three.

A.
Windows XP Professional (x64) to Windows 7 Professional (x64)

B.
Windows Vista Business (x86) to Windows 7 Professional (x64)

C.
Windows Vista Enterprise (x64) to Windows 7 Enterprise (x64)

D.
Windows Vista Home Premium (x64) to Windows 7 Home Premium (x86)