This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'Mycoplasma organisms may also cause disease in non pulmonary sites. Which of the following is the most commonly affected non-pulmonary site? (NOT RELATED) \nSelect and explain. \nA. Meningitis, B. Prosthetic hea valve, C. Septic ahritis, D. Urethritis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: .', 'role': 'assistant'}]