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. There is a server in the network. ISA Server 2006 is run by this server. The ISA Server has 4 GB of RAM. A Microsoft Office SharePoint Server 2007 portal named Portal01 is used by the company. A Web Publishing rule is created by you. Users are allowed to access Portal01 by this Web Publishing rule. On the ISA Server, a cache drive is defined by you. Now you receive report from users saying that access to Portal01 is quite slow. Since you are the technical support, you have to solve this problem. That is to say, the amount of time that users spend in accessing content on Portal01 should be cut down. So what action should you perform to achieve this goal?

A.
In order to achieve this goal, a URL set should be created. The SharePoint portal URL should be included in the URL set. For the URL set, a cache rule should be created. The Caching of content received through the Background Intelligent Transfer Service (BITS) option should be enabled in the cache rule.

B.
In order to achieve this goal, the Block high bit characters option of the HTTP policy should be enabled.

C.
In order to achieve this goal, the Percentage of free memory to use for caching option should be increased to 50%.

D.
In order to achieve this goal, a URL set should be created. The SharePoint portal URL should be included in the URL set. For the URL set, a cache rule should be created. The Cache SSL Responses option should be disabled in the cache rule.