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': 'In the WHO Oral Health Assessment form (1997) the following index criteria are used to record the dentofacial anomalies \nSelect and explain. \nA. Dental Aesthetic index, B. Treatment priority index, C. Handicapping malocclusion assessment record, D. Index of Orthodontic treatment needs', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]