This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Pediatrics
[{'content': 'In what maintenance dose can vitamin D be recommended in breast fed full term infants? \nSelect and explain. \nA. 200 IU daily, B. 400 IU daily, C. 800 IU daily, D. 1600 IU daily', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. 400IU/dayUsually breast feeding alone is recommended in the first 6 months of life in full term infants who are healthy and is a good source for various nutrients to the child in the first few months of life and helps them gain weight optimally. However, there is growing evidence that vitamin D deficiency is fairly rampant in India and neonates born to mothers who are vitamin D deficient also have vitamin D deficiency. These findings have prompted some clinicians to recommend vitamin D at a maintenance dose of 400IU/day in breast fed infants, especially those below 2.5kg to obviate the risk of vitamin D deficiency in them', 'role': 'assistant'}]