You are the network administrator for Your network consists of a single Active Directory domain named All network servers run Windows Server 2003. Each domain controller contains one disk that is configured with both the system partition and the boot partition. Every day, you use custom software to perform a fall backup of user profiles and user data. The custom backup software provides a bootable floppy disk that includes the drivers for the backup media. Every Sunday, you run the Automated System Recovery (ASR) wizard on your domain controllers in conjunction with removable backup media. Data is backed up in a file named Backup1.bkf. One Monday morning, you install a new application on a domain controller named TESTKINGDC1. When you restart TESTKINGDC1, you receive the following error: "NTLDR is missing. Pres any key to restart." You need to bring TESTKINGDC1 back online as quickly as possible. What should you do?（）

A. Restart TESTKINGDC1 by using the installation CD-ROReinstall the operating system and restore the contents of the latest full backup by using the Restore wizard. Restart TESTKINGDC1.
B. Restart TESTKINGDC1 by using the installation CD-RORestore the contents of Backup1.bkf by using the ASR disk. Restart TESTKINGDC1.
C. Restart TESTKINGDC1 by using the bootable floppy disk. Copy the contents of Backup1.bkf from the backup media to C:\winnt. Restart TESTKINGDC1.
D. Restart TESTKINGDC1 by using the bootable floppy disk. Copy the contents of the ASR disk to C:\. Restart TESTKINGDC1.