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: Dental
[{'content': 'Discharging sinus is seen in – \nSelect and explain. \nA. Syphilis, B. Herpes, C. Actinomycosis, D. Molluscum contagiosum', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]