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': 'The ideal treatment of alveolar osteitis after dental extraction is \nSelect and explain. \nA. Topical antibiotics, B. Systemic antibiotics, C. Debridement of socket and sedative dressing, D. Curettage to induce fresh bleeding', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]