You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You create an AJAX-enabled Web form by using the following code fragment. <asp：ScriptManager ID="scrMgr" runat="server" /> <asp：UpdatePanel runat="server" ID="updFirstPanel" UpdateMode="Conditional"> <ContentTemplate> <asp：TextBox runat="server" ID="txtInfo" /> English Chinese Japan Korean - 73 - Test Information Co.， Ltd. All rights reserved. <asp：Button runat="server" ID="btnSubmit" Text="Submit" /> </ContentTemplate> </asp：UpdatePanel> <asp：UpdatePanel runat="server" ID="updSecondPanel" UpdateMode="Conditional"> <ContentTemplate> ... </ContentTemplate> </asp：UpdatePanel> When the updFirstPanel UpdatePanel control is updated， a dynamic client script is registered. You write the following code segment in the code-behind file of the Web form. （Line numbers are included for reference only.） 01 protected void Page_Load（object sender， EventArgs e） 02 { 03 if（IsPostBack） 04 { 05 string generatedScript = ScriptGenerator.GenerateScript（）； 06 07 } 08 } You need to ensure that the client-script code is registered only when an asynchronous postback is issued on the updFirstPanel UpdatePanel control. Which code segment should you insert at line 06？（）
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