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: Pharmacology
[{'content': 'Cotrimoxazole is the drug of choice for: \nSelect and explain. \nA. Actinomyces, B. Nocardia, C. Both 1 and 2, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: DOC for Nocardia : Cotrimoxazole\nDOC for Actinomyces : Penicillin', 'role': 'assistant'}]