You are the network administrator for Company. Your computer is installed with Windows 2000 Professional. After installing a new application you restart the computer and receive the following error message:  "NTLDR is missing - Press any key to restart." You want your computer to start properly. You want to do this with the least amount of administrative effort.  What should you do?（）

• A、Reinstall the operating system.
• B、Start the computer by using the Windows 2000 Professional CD-ROM.
• C、Start the recovery Console and select the option to verify system files.
• D、Insert the Emergency Repair Disk.
• E、Copy Ntdetect.com from the /i386 folder on the CD-ROM to the root folder on the boot partition.