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': 'A child lost his maxillary right primary central incisor due to trauma, the pediatric dentist advised extraction of his maxillary left primary central incisor also, this approach is referred as: \nSelect and explain. \nA. Balancing extraction., B. Compensatory extraction., C. Wilkinson extraction., D. There is not any approach of this kind.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]