This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basics of Psychiatry, Subject name: Psychiatry
[{'content': 'Which of the following is not an example of disorder of perception? \nSelect and explain. \nA. Illusion, B. Hallucination, C. Pseudohalluciation, D. Delusion', 'role': 'user'}, {'content': "Answer: D \nExplanation: Delusion is not a disorder of perception, it is a disorder of thought. To be more specific, delusion is a disorder of content of thought. It is defined as a false,firm and unshakable belief that cannot be explained on the basis of person's social and cultural background. llusions, Hallucinations and Pseudo hallucinations are all disorders of perception of thought", 'role': 'assistant'}]