You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. <br /> You create a custom control named Wheel. <br /> You need to ensure that the Speed property of Wheel can be animated. <br /> What should you do?()
A、 Inherit the DependencyObject class.
B、 Declare the Speed property as a dependency property.
C、 Declare an animation of the Speed property from within the code-behind file.
D、 Implement the System.Windows.Media.Animation.IAnimatable interface with the Wheel class.