The way you have it, your classC *IS-A* classA which *IS-A* classB. There is a reason why classA removed functionality from classB. If you were able to bypass it, there is no way for the classA portion to be constructed -- hence, your classC can't be a classA anymore.
If you don't care about the functionality of classA, you can always bypass it and inherit from classB directly. Of course, then you have problems when your classC is needed in place of classA objects.
Henry [ January 29, 2008: Message edited by: Henry Wong ]