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: Psychiatry
[{'content': 'IQ of 15 is which grade of mental retardation ? \nSelect and explain. \nA. Mild, B. Moderate, C. Borderline, D. Profound', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is.'d' i.e., Profound Category IQ Normal intelligence > 90 Borderline intelligence 70 - 89 Mental retardation Mild MR Moderate MR Severe MR Profound MR 50 - 69 35 - 49 20-34 0-19", 'role': 'assistant'}]