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': '36 year old Santhosh, fights with his uncle saying that he is not his uncle. Some stranger has come in disguise in the form of his uncle to steal his property. Diagnosis: \nSelect and explain. \nA. Capgrass syndrome, B. Fregoli syndrome, C. Cotard syndrome, D. Alport syndrome', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Capgrass syndrome is a delusional disorder where patient believes that a stranger has replaced his family member.', 'role': 'assistant'}]