A technician needs to upgrade several Windows XP Professional 64-bit computers to Windows 7
Professional 64-bit. The technician wants to retain the user settings. Which of the following tasks
should the technician perform?

A.
Upgrade the 64-bit Windows XP Professional to 64-bit Windows VISTA Professional, and then
upgrade the 64-bit Windows VISTA Professional to 64-bit Windows 7 Professional.

B.
Do a clean install of 32-bit Windows VISTA Professional, and then an upgrade to 64-bit
Windows 7 Professional.

C.
Do a clean installation of 64-bit Windows 7 Professional.

D.
Upgrade from 64-bit Windows XP Professional to 64-bit Windows 7.

Explanation: