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單項(xiàng)選擇題

You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You add a Web form that contains the following code fragment:  
<asp:GridView ID="gvProducts" runat="server"   AllowSorting="True" DataSourceID="Products"> </asp:GridView>  
<asp:ObjectDataSource ID="Products" runat="server"   SelectMethod="GetData" TypeName="DAL" /> </asp:ObjectDataSource>   
You write the following code segment for the GetData method of the DAL class:  
01 public object GetData() {  
02   SqlConnection cnn = new SqlConnection( )  
03   string strQuery = "SELECT * FROM Products";  
04 ► 
05 }   
You need to ensure that the user can use the sorting functionality of the gvProducts GridView control. 
Which code segment should you insert at line 04?()

A.A
B.B
C.C
D.D

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