You work as a network administrator at ABC.com. The ABC.com network consists of an Active Directory Domain Services domain named ABC.com. The corporate firewall divides the network into an internal Local Area Network (LAN) and an external perimeter network. All servers on the network run Windows Server 2008 R2 and all client computers run Windows 7 Enterprise.

The perimeter network hosts servers that are accessible from the public internet.

A Windows Server 2008 R2 server named ABC-RDS1 is located in the LAN and runs the Remote Desktop Session Host role.

A Windows Server 2008 R2 server named ABC-RDSW is located in the LAN and runs the Remote Desktop Web Access (RD Web Access) role. ABC-RDSW provides Remote Desktop Web Access to the RemoteApp applications on ABC-RDS1.

A Windows Server 2008 R2 server named ABC-RDGW is located in the perimeter network and runs the Remote Desktop Gateway (RD Gateway) role.

To improve security, you move ABC-RDSW to the perimeter network.

Users now report that they are unable to see the RemoteApp applications when the log on to RD Web Access.

How can you ensure that RemoteApp applications on ABC-RDS1 are available through RD Web Access?

A.
By configuring the firewall to allow port 3389 between ABC-RDSW and ABC-RDS1.

B.
By configuring the firewall to allow Windows Management Instrumentation (WMI) communication between ABC-RDSW and ABC-RDS1.

C.
By restarting the World Wide Web Publishing Service on ABC-RDSW.

D.
By configuring the firewall to allow port 443 between ABC-RDSW and ABC-RDGW.