问题：

[单选]

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. 
<Movies> 
<Movie ID="1" Name="Movie1" Year="2006"> 
<Desc Value="Movie desc"/> </Movie> 
<Movie ID="2" Name="Movie2" Year="2007"> 
<Desc Value="Movie desc"/> </Movie> 
<Movie ID="3" Name="Movie3" Year="2008"> 
<Desc Value="Movie desc"/> </Movie> 
</Movies> 
You add a Web form to the application. 
You write the following code segment in the Web form. （Line numbers are included for reference only.） 
01 <form runat="server"> 
02 <asp：xmldatasource 
03 id="XmlDataSource1"
04 runat="server" 
05 datafile="movies.xml" /> 
06 
07 </form> 
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