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: Pathology
[{'content': "Wilson's disease is due to mutation in which gene \nSelect and explain. \nA. WT - 1, B. ATP7B, C. ATP7A, D. LMK - 2", 'role': 'user'}, {'content': "Answer: B \nExplanation: Wilson's disease is due to mutation of ATP7B gene on chromosome 13q", 'role': 'assistant'}]