You need to ensure that when the button is clicked,both update panels update the tim without generat

You need to ensure that when the button is clicked,both update panels update the tim without generating a
postback.
What should you do?

A.
Add the following marktip to UpdatePanel1.
<Triggers>
<asp:PostBackTrigger ControlID=”btnSave” />
</Triggers>

B.
Set the UpdateMode property for the UpdatePanel2 to “Always”

C.
Add the following markup to UpdatePanel1
<Triggers>
<asp:AsyncPostBackTrigger ControlID=”btnSave”
EventName=”Click” />
</Triggers>

D.
Set the UpdateMode property for UpdatePanel2 to “Conditional”

Explanation:
I changed the answer. Choise (C)became different in the new exam(Panel1 rather than Panel2).
Shortly:The true answer is:
Add the following marktip to UpdatePanel1.
<Triggers>
<asp:PostBackTriggerControlID=”btnSave” />
</Triggers>