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    Question

    Which statement about abstract methods is

    true?
    A They must be declared private. Correct Answer Incorrect Answer
    B They provide a default implementation. Correct Answer Incorrect Answer
    C They must be implemented by concrete subclasses. Correct Answer Incorrect Answer
    D They can only exist in concrete classes. Correct Answer Incorrect Answer
    E They are always static. Correct Answer Incorrect Answer

    Solution

    An abstract method is declared without an implementation (body). Any concrete (non-abstract) class that inherits from an abstract class containing abstract methods *must* provide an implementation for all inherited abstract methods.

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