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: Social & Preventive Medicine
[{'content': 'Education criteria for mental retardation is ? \nSelect and explain. \nA. Mild, B. Moderate, C. Severe, D. Profound', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Mild", 'role': 'assistant'}]