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
Behcet disease HLA associated ? 
Select and explain. 
A. B51, B. B27, C. DRQ, D. DDR4
A: B51
Answer: A: B51 
Explanation: Ans. is 'a' i.e., B51