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': 'Recommended daily dietary allowance of vitamin A for infants is \nSelect and explain. \nA. 100-200 microgram, B. 300-400 microgram, C. 500-600 microgram, D. 750 microgram', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Recommended daily dietary allowance for vitamin A for an infant is 300-400 microgram. Ref: Page 120; Ghai essential pediatrics; 6th edition', 'role': 'assistant'}]