This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Human identification, Subject name: Forensic Medicine
[{'content': 'Permanent impairment of fingerprints occurs in all except \nSelect and explain. \nA. Leprosy, B. Acanthosis nigricans, C. Electrical injuries, D. Radiation injuries', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Permanent impairment of fingerprints occurs in: Leprosy Electrical injuries Radiation injuries Ridge alteration occur in: Acanthosis nigricans Scleroderma', 'role': 'assistant'}]