Your network consists of a single Active Directory domain. The domain contains a server that runs Windows Server 2008 R2 and that has the Remote Desktop Services server role installed.   The server has six custom applications installed. The custom applications are configured as RemoteApps.   You notice that when a user runs one of the applications， other users report that the server seems slow and that some applications become unresponsive.    You need to ensure that active user sessions receive equal access to system resources. What should you do？（）

• A、Implement Remote Desktop Web Access.
• B、Implement Remote Desktop Connection Broker.
• C、Configure Performance Monitor.
• D、Implement Windows System Resource Manager.