You are an administrator of Ezonexam.com's network. You want to perform. routine upgrades

on your Windows 2000 Server computer. You use your non-administrator user account in the domain to logon to the server.

You want to upgrade all of the critical system files and patches on the server in the shortest possible time.

What should you do？

A．Use Windows Update.

B．Run System File Checker.

C．Log on as administrator and run Windows Update.

D．Log on as administrator and run System File Checker.