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': 'ASLO Titres are used in the diagnosis of - \nSelect and explain. \nA. Acute rheumatoid arthritis, B. Acute rheumatic fever, C. Ankylosing spondylitis, D. Osteoarthritis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]