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': 'The most sensitive test for SLE - \nSelect and explain. \nA. Anti ds DNA, B. ANA, C. Anti histone, D. Complement C levels', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., ANA", 'role': 'assistant'}]