You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You create a file named movies.xml that contains the following code fragment：                                You add a Web form to the application.  You write the following code segment in the Web form：   01   02      06 ►  07     You need to implement the XmlDataSource control to display the XML data in a TreeView control. Which code segment should you insert at line 06？（）

• A、A
• B、B
• C、C
• D、D