Which of the following statements about polymorphism is false? with polymorphism, you can direct a variety of objects to behave in manners appropriate to those objects without even knowing their types. with polymorphism, new types of objects that can respond to existing messages can easily be incorporated into a system without modifying the base system. polymorphism enables you to deal in specifics and let the execution-time environment concern itself with the generalities. to get polymorphic behavior among existing objects, those objects must be instantiated from classes in the same inheritance hierarchy.

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