You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You discover that when the application runs, a user control is not rendered correctly. You need to find out the user interface (UI) element of the window that is causing the rendering problem. What should you do?

A.
Use the Local Window.

B.
Use the WPF Visualizer.

C.
Generate a trace log by using IntelliTrace.

D.
Set a breakpoint at the control. Run the application.