All servers on your network run Windows Server 2008 R2. You deploy Remote Desktop Services  （RDS）. You are configuring the Remote Desktop Session Host （RD Session Host） role service. You need to ensure that programs that are running continue to run when users are no longer actively connected to the RD Session Host server. Which setting should you configure？（）

• A、Idle session limit
• B、Active session limit
• C、End a disconnected session
• D、When a session limit is reached or connection is broken