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': 'New born formation occurs: \nSelect and explain. \nA. 2-4 days after surgery., B. 6 days after surgery., C. 10 days after surgery., D. 14 days after surgery.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]