You install the Web Server （IIS） role on a new server that runs Windows Server 2008. You install a Microsoft .NET Framework 1.0 application on a Web site on the Web server. The company security policy states that all applications must run by using the minimum level of permission. You need to configure the Web site application so that it has the permissions to execute without creating any other content and without accessing any operating system components. What should you do？（）

A. Set the .NET Framework trust level to Full for the Web site.
B. Set the .NET Framework trust level to Low for the Web site.
C. Set the .NET Framework trust level to High for the Web site.
D. Set the .NET Framework trust level to Medium for the Web site.