If a customer wants to create a multi-boot PC with different editions of Windows, which of the
following is MOST important to consider?

A.
Using multiple partitions

B.
Using multiple hard drives

C.
Using a single partition

D.
Using a PXE boot scheme

Explanation:
http://windows.microsoft.com/en-us/windows-vista/install-more-than-one-operatingsystem-multiboot