You have a computer that runs Windows Vista. The hard disk is configured as shown in the exhibit. (Clickthe Exhibit button.) You need to install Windows 7 in a dual-boot configuration.  What should you do?（）

A.From Windows Vista, extend Disk 0 Partition 1. Install Windows 7 in Disk 0 Partition 1.

B.From Windows Vista, create a new partition. Install Windows 7 in Disk 0 Partition 1.

C.Start the computer from the Windows 7 installation media. Install Windows 7 in Disk 0 Partition 1.

D.Start the computer from the Windows 7 installation media. Install Windows 7 in the unallocated space on Disk 0