Your network contains a single ISA Server 2006 computer. Employees use an application named App1, which is hosted on a server named Server1. Server1 has Terminal Services installed. On a Windows Server 2003 computer, you enable Remote Desktop connections. You create a Web publishing rule to publish the Remote Desktop connections virtual directory.
Users can connect to the Remote Desktop Web Connection site by using Internet Explorer. However, they cannot establish a Terminal Services connection. You need to ensure that users can access App1. What should you do?

A.
Configure an RDP server publishing rule.

B.
Configure an RPC Services server publishing rule.

C.
Configure a new RDP protocol definition.

D.
Configure a new RPC protocol definition.