You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You define the following class. Public Class Product  Public Property Price（　） As Decimal Get End Get  Set(ByVal value As Decimal) End Set  End Property End Class  Your application contains a Web form with a Label control named lblPrice.  You use a StringReader variable named xmlStream to access the following XML fragment.  You need to display the price of the product from the XML fragment in the lblPrice Label control. Which code segment should you use? （）

• A、A
• B、B
• C、C
• D、D