You manage a member server that runs Windows Server 2008. The server runs the Terminal Server Gateway （TS Gateway） role service.  You need to find out whether a user named User1 has ever connected to his office workstation through the TS Gateway server. What should you do？（）

• A、View the events in the Monitoring folder from the TS Gateway Manager console.
• B、View the Event Viewer Security log.
• C、View the Event Viewer Application log.
• D、View the Event Viewer Terminal Services-Gateway log.