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: Microbiology
[{'content': "HLA - B47 is associated with \nSelect and explain. \nA. Myasthenia gravis, B. Behcet's disease, C. Congenital adrenal hyperplasia, D. Abacavir hypersensitivity", 'role': 'user'}, {'content': "Answer: C \nExplanation: HLA - B8 - Myasthenia gravis\nHLA-B51 - Behcet's disease\nHLA - B47 - CAH\nHLA- B57 - Abacavir hypersensitivity.", 'role': 'assistant'}]