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': 'Most common mutated gene in primary hemochromatosis \nSelect and explain. \nA. HFE gene, B. Transferrin receptor 2, C. Ferroportin 1, D. Hepcidin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Primary hemochromatosis - HFE gene Chr6P.', 'role': 'assistant'}]