This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Antimetabolites and Quinolones, Subject name: Pharmacology
[{'content': 'Drug of choice for treatment of Pneumocystitis jiroveci pneumonia is \nSelect and explain. \nA. Cotrimoxazole, B. Amoxicillin, C. Dexamethasone, D. Ceftriaxone', 'role': 'user'}, {'content': 'Answer: A \nExplanation: DOC for both prophylaxis and treatment of Pneumocystis jiroveci pneumonia is Cotrimoxazole Other drugs that can be used are Dapsone Clindamycin Pentamidine Atovaquone', 'role': 'assistant'}]