This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pneumonia, Subject name: Medicine
[{'content': 'Which of the following is used for the prevention of Pneumocystis jiroveci infection in HIV positive patients? \nSelect and explain. \nA. Azithromycin, B. Acyclovir, C. Levofloxacin, D. Sulfamethoxazole + trimethoprim', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Prophylaxis with trimethoprim-sulfamethoxazole (TMP-SMZ) prevents- infection with P.Jiroveci, Toxoplasma gondii. Intolerance of TMP-SMZ is common Alternative agents provide less adequate protection against Pneumocystis species.', 'role': 'assistant'}]