You create a control named ContosoUI for a Web application. You need to add the control to the toolbox of Microsoft Visual Studio .NET. Which two actions should you perform?
(Each correct answer presents part of the solution. Choose two.)

A.
Create the ContosoUI control as a Web Control Library.

B.
Create the ContosoUI control as a Web user control.

C.
Within the Visual Studio .NET toolbox, browse to and select ContosoUI.ascx.

D.
Within the Visual Studio .NET toolbox, browse to and select ContosoUI.dll.