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': 'Least successful approach of behaviour management is: \nSelect and explain. \nA. Coping, B. Comparison, C. Tell Show and Do, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Least successful approach of behaviour management is comparing the child with others.', 'role': 'assistant'}]