You are the network administrator for your company. The network consists of a single Active Directory domain. All servers run Windows Server 2003. All client computers run Windows XP Professional. A new low-priority update， Q318138， is released and is synchronized with the Windows Server Update Services （WSUS） server on the network. You decide to approve the update without testing. After the update is applied to client computers， users report that they can no longer run an accounting application.You need to remove the update from all client computers until you can test the update. What should you do？（）

A. Clear the Automatically approve new versions of previously approved updates option on the WSUS server. Resynchronize the server with the Windows Update server.
B. Clear the update for approval on the WSUS server. Resynchronize the server with the Windows Update servers.
Clear the update for approval on the WSUS server. Run the spuninst command from the Systemroot\$NtUninstallQ318138$\spuninst directory on each client computer.
D. Clear the Automatically approve new versions of previously approved updates option on the WSUS server. Delete the Systemroot\$NtUninstallQ318138$ directory on each client computer.