You are employed as a system administrator at Certkiller.com. You are curretly creating aMicrosoft ASP.NET application using Microsoft .NET Framework v3.5. <br /> The code fragment below is written to the application:<br /> <asp:DropDownList AutoPostBack="true" ID="TestList" runat="server" <br /> onselectedindexchanged="TestList_SelectedIndexChanged"><br /> <asp:ListItem>1</asp:ListItem><br /> <asp:ListItem>2</asp:ListItem><br /> <asp:ListItem>3</asp:ListItem><br /> </asp:DropDownList> <br /> The Web page contains a MultiView control named CKView. CKView consists of three child Viewcontrols. Management wants you to make sure that
A、A.A
B、B.B
C、C.C
D、D.D