This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Wilson Disease, Subject name: Medicine
[{'content': "Menke's kinky (Steely) hair disease occurs due to: \nSelect and explain. \nA. Low copper levels, B. Low zinc levels, C. Low iron levels, D. Low fluoride levels", 'role': 'user'}, {'content': "Answer: A \nExplanation: Menke's kinky hair disease- X-linked defect in intestinal absorption of copper. Mutation in ATP7A gene. Low levels of copper and ceruloplasmin. C/F- Progressive cerebral degeneration, growth retardation Sparse brittle hair Scurvy-like bone changes Anemia and neutropenia Failure to thrive Pili toi, trichorrhexis and monilethrix may occur.", 'role': 'assistant'}]