You need to configure a new computer to dual-boot to the following operating systems：  Microsoft Windows XP Professional Microsoft Windows Vista  Which two procedures should you perform？ （）

A.Create two partitions. Install Windows XP Professional on the first partition. Boot the computer from the Windows Vista DVD-ROM. Install Windows Vista on the second partition.

B.Create two partitions. Install Windows Vista on the first partition. Boot from the Windows XP Professional installation CD-ROM. Install Windows XP Professional on the second partition.

C.Create one partition. Install Windows XP Professional on the partition. From Windows XP Professional launch the Windows Vista setup utility. Install Windows Vista in the same partition.

D.Create two partitions. Install Windows XP Professional on the first partition. From Windows XP Professional launch the Windows Vista setup utility. Install Windows Vista on the second partition.