You are the network administrator for your company. All servers run Windows Server 2003. All client computers run Windows XP Professional.You install Windows Software Update Services （WSUS） on a computer named Server1. This WSUS installation must meet the following requirements： Use the least amount of disk space on Server1.All updates must be tested before being deployed to the client computers.You clear the Automatically Approve Updates for Installation checkbox. You open the WSUS console. You need to complete the installation and meet the requirements.  Which two actions should you perform？（）

• A、Change the Advanced Synchronization Options dialog box so that updates are not stored locally.
• B、Change the Revisions to Updates setting so that new versions of previously approved updates are not automatically approved.
• C、Change the Revisions to Updates setting to automatically approve all updates.
• D、Remove the Critical Updates option from Updates Classifications.