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': 'Cementogenesis begins after how many days of root end resection: \nSelect and explain. \nA. 6 days., B. 10-12 days., C. 28 days., D. 8 weeks.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]