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
Carpel radiograph is used for assessment of: 
Select and explain. 
A. Bone condition, B. Chronological age, C. Treatment plan, D. Skeletal maturation
D: Skeletal maturation
Answer: D: Skeletal maturation 
Explanation: None