This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti Microbial, Subject name: Pharmacology
[{'content': 'Combination of trimethoprim and sulfamethoxazole is effective against which opportunistic infection in AIDS: \nSelect and explain. \nA. Herpes simplex, B. Cryptococcal meningitis, C. Pneumocystis jiroveci, D. Tuberculosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C. Pneumocystis jiroveciThis combination of drug is known as cotrimoxazole. It is bactericidal in nature and plays a synergistic role. It is drug of choice for pneumonia caused by pneumocystis jiroveci in AIDS patients.', 'role': 'assistant'}]