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': 'Carpel radiograph is used for assessment of: \nSelect and explain. \nA. Bone condition, B. Chronological age, C. Treatment plan, D. Skeletal maturation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]