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': 'After multiple tooth extraction, suture is placed at: \nSelect and explain. \nA. Interdental septum, B. Across the socket, C. Adjacent tooth, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]