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': 'The upper line in growth cha denotes what percentile of WHO reference standard: March 2005 \nSelect and explain. \nA. 50th percentile, B. 60th percentile, C. 70th percentile, D. 80th percentile', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A: 50th percentile The growth cha recommended by the Government of India has 4 reference curves. The topmost curve corresponds to 80% of the median (50th percentile) of the WHO reference standard. Second, third and fouh curve corresponds to 70, 60 and 50% of the median. Area between 80% and 70% lines indicates first degree/ mild malnutrition.', 'role': 'assistant'}]