This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
[{'content': 'Hallucination are \nSelect and explain. \nA. Feeling of familiarity with unfamiliar thing, B. Alteration of perception of ones reality, C. Misinterpretation of stimuli, D. Perception occurring without external stimulation 7', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Perception occuring without external stimulation', 'role': 'assistant'}]