Your company has a single Active Directory directory service domain. All servers in your environment run Windows Server 2003. Client computers run Windows XP or Windows Vista. You plan to create a security update scan procedure for client computers. You need to choose a security tool that supports all the client computers. <br /> Which tool should you choose? ()
A、 UrlScan Security Tool
B、 Enterprise Scan Tool (EST)
C、 Malicious Removal Tool (MRT)
D、 Microsoft Baseline Security Analyzer (MBSA)