This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Social Science, Mental Health & Genetics, Subject name: Social & Preventive Medicine
[{'content': 'Mild mental retardation is defined when IQ is- \nSelect and explain. \nA. 50-70, B. 35-49, C. 20-34, D. <20', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 50-70 CategoryIQMild50-70Moderate35-49Severe20-34Profound<20", 'role': 'assistant'}]