If NTLM authentication is enabled, what does Request.ServerVariables("LOGON_USER") return? <BR>Choice 1 <BR> The domain and user name of the authenticated client. <BR>Choice 2 <BR> Whether the user has permission to view the site. <BR>Choice 3 <BR> The name of the default anonymous account for the site. <BR>Choice 4 <BR> The browser type the client is using. <BR>Choice 5 <BR> Nothing, unless NTLM security is turned off. <BR>