You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application includes a function that is triggered by filling out a form and by clicking a button. Currently, the application is tested manually. You need to create an automated and iterative process to test the application. What should you do?（）

A. Use IntelliTrace.
B. Use UISpy.exe to extract the user interface (UI) information. Then, use MSTest.exe.
C. Use classes in the System.Windows.Automation and System.Windows.Automation.Text namespaces.
D. Use the Action Recording methodology to record the user interface (UI) actions. Then, use MSTest.exe.