You are the administrator of Company's Windows 2000 network. You have been asked to rollout a Windows 2000 Professional service pack on all Windows 2000 Professional client computers in Company's main office. You create a shared folder named InstallFiles that contains the installation files for the service pack and connect to the shared folder. You want to prevent the user interface from being displayed during the installation.  What should you do? （）

• A、Connect to the InstallFiles shared folder and run the Update -q command.
• B、Connect to the InstallFiles shared folder and run the Update -u command.
• C、Connect to the InstallFiles shared folder and run the Update -z command.
• D、Connect to the InstallFiles shared folder and run the Update -s：InstallFiles command.