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': 'Which is the most specific autoantibody in SLE \nSelect and explain. \nA. Anti - nuclear antibody, B. Anti - smith antibody, C. Anti - histone antibody, D. Anti - Ro antibody', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Most sensitive - anti nuclear antibody.\nMost specific - anti smith antibody.', 'role': 'assistant'}]