You want to improve the TCP transmission speed of a Windows 2000 Server computer. You also want to remove an unused registry key. You use Regedt32 to edit the registry of the Windows 2000 Server. You insert a value in the registry named TCPWindowSize, and you remove the unused key. You restart the computer, but the computer stops responding before the logon screen appears.
You want to return the computer to its previous configuration. What should you do?
A．Restart the computer in Safe Mode. Then restart the computer again.
B．Restart the computer by using the Recovery Console. Run the Fixboot c: command, and then run the Exit command.
C．Restart the computer by using the Recovery Console. Run the enable winlogon service_auto_start command, and then run the Exit command.
D．Restart the computer by using the last known good configuration.