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    Question

    Deletion in Red-Black Tree may

    require:
    A Only rotations Correct Answer Incorrect Answer
    B Only color changes Correct Answer Incorrect Answer
    C Both rotations and recoloring Correct Answer Incorrect Answer
    D Hashing Correct Answer Incorrect Answer
    E No balancing Correct Answer Incorrect Answer

    Solution

    Red-Black tree deletion rebalances using rotations + recoloring.

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