Your company has an Active Directory Domain Services (AD DS) domain. All servers run Windows Server 2008 R2. All client computers run Windows 7. You have a Remote Desktop Session Host (RD Session Host) server and a Remote Desktop Gateway (RD Gateway) server. You use Windows Firewall on your servers. You need to ensure that users can connect to their virtual desktops. What should you do？（）
- ACreate a Windows Firewall inbound rule for port 443 on the RD Gateway server.
- BCreate a Windows Firewall inbound rule for port 443 on the RD Session Host server.
- CCreate a Windows Firewall inbound rule for port 3389 on the RD Gateway server.
- DCreate a Windows Firewall inbound rule for port 3389 on the RD Session Host server.