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': 'Following is not a risk factor for development of diabetes mellitus \nSelect and explain. \nA. Sedentary life style, B. High intake of vitamin-A, C. Excessive intake of alcohol, D. Protein energy malnutrition in infancy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cataract accounts for 62.6% of blindness in India.', 'role': 'assistant'}]