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: Forensic Medicine
[{'content': "Magnan's symptoms is : \nSelect and explain. \nA. Illusion, B. Delusion, C. Formication, D. Depersonalization", 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Formification', 'role': 'assistant'}]