This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Forensic Psychiatry, Subject name: Forensic Medicine
[{'content': 'A person falsely perceives that his close friend has been replaced by an exact double. This phenomenon is referred to as: \nSelect and explain. \nA. Cotard syndrome, B. Fregoli syndrome, C. Capgras syndrome, D. Delusional perception', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Capgras syndrome: false belief that a familiar person or place has been replaced with an exact duplicate. Fregoli delusion, or the delusion of doubles, is a false belief that different people are in fact a single person who changes appearance. Cotard syndrome is a false belief that they are already dead, are putrefying, or have lost their blood or internal organs.', 'role': 'assistant'}]