You Have a Class Which Extends the JComponent Class

You have a class which extends the JComponent class. In this class you have created a painted graphical object. Your code will change the data in the graphical object. What additional code is needed to ensure that the graphical object will be updated with the changed data?

A) You must call the component object's paintComponent() method.
B) You must call the component object's repaint() method.
C) You do not have to do anything - the component object will be automatically repainted when its data changes.
D) You must use a Timer object to cause the component object to be updated.