All of the following are symptoms of hyperactive delirium except

A. Agitation is a common symptom of hyperactive delirium. This state often involves excessive restlessness, combativeness, or irritability. B. Sluggishness is more indicative of hypoactive delirium, where the patient is typically less responsive, lethargic, and withdrawn. It is not characteristic of the hyperactive form of delirium, which involves heightened activity and increased arousal. C. Hallucination is a typical symptom of hyperactive delirium. Patients may experience visual or auditory hallucinations, which can increase agitation and confusion. D. Restlessness is another hallmark symptom of hyperactive delirium, often leading to pacing, inability to stay still, and increased anxiety.