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': 'A Person suffers from HLA B 27 associated reactive ahritis, urethritis and conjunctivitis. Which is most likely organism involved in this case ? \nSelect and explain. \nA. Borrelia burgdorferi, B. Ureaplasma urealyticum, C. Betahemolytic streptococci, D. Streptococcus bovis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ureaplasma urealyticum', 'role': 'assistant'}]