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: Medicine
[{'content': "Wilson's Disease is caused by mutation of which of the following gene? \nSelect and explain. \nA. ATP 7A gene, B. ATP7B gene, C. ATP8A gene, D. ATP8B gene", 'role': 'user'}, {'content': "Answer: B \nExplanation: Wilson's disease is an autosomal recessive disorder caused by mutations in the ATP7B gene. Clinical manifestations are caused by copper toxicity and primarily involve the liver and the brain. Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 3188", 'role': 'assistant'}]