John works as a Web Developer for ABC Inc. He develops an ASP.NET application, named MyApp1, using Visual Studio .NET. The application will be used in the Sales department to generate monthly…

John works as a Web Developer for ABC Inc. He develops an ASP.NET application, named MyApp1, using Visual Studio .NET. The application will be used in the Sales department to generate monthly reports. The company uses Microsoft Windows authentication. All users are in the TESTPRO1 domain. John wants to ensure that all users except Mark, Roger, and David are allowed to access the application. Which of the following code will he use in the application's Web.config file to accomplish the task?