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': 'Delusion is a disorder of- \nSelect and explain. \nA. Thought, B. Perception, C. Insight, D. Cognition', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Delusion is a disorder of content of thought.', 'role': 'assistant'}]