You are employed as a system administrator at Certkiller.com. You are curretly creating aMicrosoft ASP.NET application using Microsoft .NET Framework v3.5.  The code fragment below is written to the application： 1 2 3   The Web page contains a MultiView control named CKView. CKView consists of three child Viewcontrols. Management wants you to make sure that a DropDownList control named TestList canbe used to select the View controls.  What should you do？（）

• A、A
• B、B
• C、C
• D、D