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
Most specific antibody in SLE is ? 
Select and explain. 
A. Anti nuclear, B. Anti Sm, C. Anti Ro, D. Anti histone
B: Anti Sm
Answer: B: Anti Sm 
Explanation: Ans. is 'b' i.e., Anti Sm