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': 'A child dentist manages an uncooperative child by demonstrating\nthe procedures on another cooperative child. This way of\nchild management is \nSelect and explain. \nA. Modelling, B. Desensitisation, C. Tell show do, D. Aversive conditioning', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]