This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth, Development, and Behavior, Subject name: Pediatrics
[{'content': 'Range of IQ in mild mental retardation is? \nSelect and explain. \nA. <50, B. 50-70, C. 70-100, D. >100', 'role': 'user'}, {'content': "Answer: B \nExplanation: b. 50-70(Ref: Nelson's 20/e p 217, Ghai 8/e p 52-54)Mild intellectual disability (ID) is IQ between 50-70, while severe ID is IQ <50", 'role': 'assistant'}]