问题：

[多选]

You work as a Web Developer at Certkiller.com. You are in the process of creating a Webapplication using Microsoft ASP.NET 3.5. 
In order toimplement partial rendering on a page you add the following markup： 
<asp：ScriptManager ID="_scriptManager" runat="server"/> 
<asp：UpdatePanel ID="updatePanel1" runat="server"> 
<ContentTemplate> 
<asp：Label ID="label1" runat="server"/> 
<asp：Button ID="CKupdateButton" runat="server" Text="Update"/> 
</ContentTemplate> 
</asp：UpdatePanel> 
<asp：UpdatePanel ID="updatePanel2" runat="server"> 
<ContentTemplate> 
<asp：Label ID="label2" runat="server"/> 
</ContentTemplate> 
<Triggers> 
<asp：AsyncPostBackTrigger ControlID="CKupdateButton"/> 
</Triggers>
</asp：UpdatePanel> 
You only want the content in the updatePanel2 control to be updated when the Button controlnamed _btnUpd is clicked. You need to configure the page to accomplish this goal of thecompany. 
What should you do？（）

A . You should consider replacing AsyncPostBackTrigger with PostBackTrigger.
B . You should consider setting the UpdateMode property of updatePanel2 to Conditional.
C . You should consider setting the ChildrenAsTriggers property of updatePanel1 to false.
D . You should consider setting the ChildrenAsTriggers property of updatePanel2 to false.
E . You should consider setting the UpdateMode property of updatePanel1 to Conditional.
F . You should consider setting the UpdateMode property of updatePanel2 to Always.