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: Surgery
[{'content': 'Actinomycosis is sensitive to - \nSelect and explain. \nA. Streptomycin, B. Nystatin, C. Pencillin, D. Iodox - uridine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: • Actinomycosis is a granulomatous suppurative bacterial disease caused by Actinomyces.\n• Usually results following tooth extraction, odontogenic infection, or facial trauma.\nClinical Features\n• Oral-cervicofacial disease is the MC form, characterized by a painless "lumpy jaw."\n• Pelvic actinomycosis is a rare but proven complication of use of intrauterine devices.\nDiagnosis\n• Accurate diagnosis depends on careful histologic analysis.\n• Presence of sulfur granules within purulent specimen is pathognomonic.\nTreatment\n• Penicillin and sulfonamides\xa0are typically effective against these infections.', 'role': 'assistant'}]