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：            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