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
Under National Programme for Prevention of Nutritional Blindness, a child in the age group of 6-11 months is given a single dose of vitamin A is:March 2005 
Select and explain. 
A. 50,000 IU, B. 1,00,000 IU, C. 1,50,000 IU, D. 2,00,000 IU
B: 1,00,000 IU
Answer: B: 1,00,000 IU 
Explanation: Ans. B: 1,00,000 IUNutritional blindness which affects over seven million children in India per year results mainly "from the deficiency of vitamin A coupled with protein-energy malnutrition.In its severest form, it often result in loss of vision.Vitamin A deficiency is assessed on the basis of conjuctival xerosis and Bitot's spot.