Q:

Which problem may arise if we use abstract class functions for polymorphism?

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Which problem may arise if we use abstract class functions for polymorphism?


  1. All classes are converted as abstract class
  2. Derived class must be of abstract type
  3. All the derived classes must implement the undefined functions
  4. Derived classes can’t redefine the function

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(c).All the derived classes must implement the undefined functions

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