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': 'Behcet disease HLA associated ? \nSelect and explain. \nA. B51, B. B27, C. DRQ, D. DDR4', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., B51", 'role': 'assistant'}]