This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Medicine
[{'content': 'Treatment of choice of thoracic actinomycosis is: \nSelect and explain. \nA. Amphotericin B, B. Cotrimoxazole, C. Penicillin, D. Itraconazole', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' Penicillin Actinomycosis occur at different sites such as oro cervicofacial, thoracic, abdominal and pelvic.The drug of choice for all types of actinomycosis is penicillin.", 'role': 'assistant'}]