Your company network includes portable computers that have Windows 7 Ultimate and Windows 7
Professional installed.
You want to standardize all portable computers to Windows 7 Professional for Key Management
Server (KMS) licensing purposes.
You need to install Windows 7 Professional on all Windows 7 Ultimate portable computers.
What should you do?

A.
Supply the Windows 7 Professional KMS key.

B.
Launch Windows Anytime Upgrade.

C.
Launch Windows Update.

D.
Perform a clean installation over the existing system partition.

E.
Perform a clean installation on a non-system partition.