Which of the following statements is NOT true in the context of cerebellar disorders?

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Romberg's test yields a positive resultAdiadochokinesia is presentKnee reflexes exhibit a pendular responseInvoluntary tremors occurNone of the above

Explanation

In cerebellar disease, Romberg's sign is typically positive, adiadochokinesia is observed, and involuntary tremors are common. However, a pendular knee jerk is not characteristic of cerebellar dysfunction.