You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.

You write the following code fragment. (Line numbers are included for reference only.)

01 <asp:UpdatePanel ID=”upnData” runat=”server”
02 ChildrenAsTriggers=”false” UpdateMode=”Conditional”>
03 <Triggers>
04
05 </Triggers>
06 <ContentTemplate>
07 <!– more content here –>
08 <asp:LinkButton ID=”lbkLoad” runat=”server” Text=”Load”
09 onclick=”lbkLoad_Click” />
10 <asp:Button ID=”btnSubmit” runat=”server” Text=”Submit”
11 Width=”150px” onclick=”btnSubmit_Click” />
12 </ContentTemplate>
13 </asp:UpdatePanel>
14 <asp:Button ID=”btnUpdate” runat=”server” Text=”Update”
15 Width=”150px” onclick=”btnUpdate_Click” />

You need to ensure that the requirements shown in the following table are met.

What should you do?

A.
Set the value of the ChildrenAsTriggers property in line 02 to false.
Add the following code fragment at line 04.
<asp:AsyncPostBackTrigger ControlID=”btnUpdate” />
<asp:PostBackTrigger ControlID=”btnSubmit” />

B.
Set the value of the ChildrenAsTriggers property in line 02 to false.
Add the following code fragment at line 04.
<asp:AsyncPostBackTrigger ControlID=”btnSubmit” />
<asp:PostBackTrigger ControlID=”btnUpdate” />

C.
Set the value of the ChildrenAsTriggers property in line 02 to true.
Add the following code fragment at line 04.
<asp:AsyncPostBackTrigger ControlID=”btnSubmit” />
<asp:PostBackTrigger ControlID=”btnUpdate” />

D.
Set the value of the ChildrenAsTriggers property in line 02 to true.
Add the following code fragment at line 04.
<asp:AsyncPostBackTrigger ControlID=”btnUpdate” />
<asp:PostBackTrigger ControlID=”btnSubmit” />