You have an Active Directory Domain Services (AD DS) domain. All servers run Windows Server 2008 R2. All client computers run Windows 7.All client computers are configured to extend the desktop display across two monitors. You have a Remote Desktop Session Host (RD Session Host) server. You need to ensure that users can extend the Remote Desktop Connection window across both monitors. What should you do?（）
- AConfigure the screen resolution of the RD Session Host server.
- BConfigure the Ease of Access options on the RD Session Host server.
- CConfigure the display configuration settings of the Remote Desktop Connection client to use all monitors.
- DConfigure the display configuration settings of the Remote Desktop Connection client to set the size of the remote desktop to Full Screen.