You work as an IT professional in an international corporation named Wiikigo. In the company, your job is to configure Microsoft Internet Security and Acceleration Server 2006. And you are experienced in performing and managing networks and operational systems. In addition, you are skilled at deploying ISA Server 2006, configuring firewall settings, and optimizing performance of the ISA Server 2006 cache. The network is composed of an Active Directory domain. All computers in the network belong to the Active Directory domain. There is a server in the network. This server runs ISA Server. The server has been configured as a firewall and as a Web proxy. User access to HTTP, HTTPS, FTP, and RDP has been defined by the existing Internet access rule. The user set of the Internet access rule is changed by you from All Users to All Authenticated Users. You receive report from users saying that they fail to use the Remote Desktop client to connect to remote computers, but they are able to use a Web browser to access the Internet. Since you are the technical support, you have to make sure that on the Internet, RDP connections to servers on the Internet can be established by users. So what action should you perform?

A.
The existing rule should be replaced with two new Internet access rules. For All Authenticated Users, HTTP, HTTPS, and FTP are contained in the first rule. For All Users, RDP is contained in the second rule.

B.
In Group Policy, the Auto Configuration URL should be configured.

C.
For ISA Server software, the Firewall Client should be installed on all client computers.

D.
The ISA Server should be configured as the default gateway on all client computers.