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
The HLA class III region genes are impoant elements in: September 2012 
Select and explain. 
A. Transplant rejection phenomenon, B. Governing susceptibility to autoimmune disease, C. Immune surveillance, D. Antigen presentation and elimination
B: Governing susceptibility to autoimmune disease
Answer: B: Governing susceptibility to autoimmune disease 
Explanation: Ans. B i.e. Governing susceptibility to autoimmune disease