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      Question

      Consider the following statements. S1:  The

      sequence of procedure calls corresponds to a postorder traversal of the activation tree. S2:  The sequence of procedure returns corresponds to a preorder traversal of the activation tree. Which one of the following options is correct?
      A S1 and S2 both are true Correct Answer Incorrect Answer
      B S1 and S2 both are false Correct Answer Incorrect Answer
      C S1 is true and S2 is false Correct Answer Incorrect Answer
      D S1 is false and S2 is true Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      The sequence of procedure calls corresponds to a preorder traversal of the activation tree. The sequence of procedure returns corresponds to a postorder traversal of the activation tree.

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