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
A boy 10-year-old, fractured his central incisor 1 ½ year
back. His pulp test is negative. What is the treatment: 
Select and explain. 
A. Debridernent of pulp space and apexification, B. RCT, C. Debridement and pulpotomy, D. Observe, no treatment
A: Debridernent of pulp space and apexification
Answer: A: Debridernent of pulp space and apexification 
Explanation: None