You are a desktop support technician for your company. You plan to upgrade 5000 Microsoft Windows XP Professional computers to Windows Vista. You need to identify if the Windows XP applications can run on Windows Vista. You must achieve this goal with the minimum amount of administrative effort. What should you do?

A.
Run Windows Update.

B.
Use the Application Compatibility Toolkit (ACT) 5.0

C.
From a Windows XP CD-ROM, run winnt32.exe / checkupgradeonly

D.
Run the Windows Vista Upgrade Advisor.