【单选题】
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：  <br /> <asp：GridView ID="gvProducts" runat="server"   AllowSorting="True" DataSourceID="Products"> </asp：GridView>  <br /> <asp：ObjectDataSource ID="Products" runat="server"   SelectMethod="GetData" TypeName="DAL" /> </asp：ObjectDataSource>   <br /> You write the following code segment for the GetData method of the DAL class：  <br /> 01 public object GetData（） {  <br /> 02   SqlConnection cnn = new SqlConnection（ ）  <br /> 03   string&ens
A、A
B、B
C、C
D、D
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