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
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: 
Select and explain. 
A. Balancing extraction., B. Compensatory extraction., C. Wilkinson extraction., D. There is not any approach of this kind.
A: Balancing extraction.
Answer: A: Balancing extraction. 
Explanation: None