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': 'Late metabolic acidosis in newborns are caused due to feeding of which formula: \nSelect and explain. \nA. Whey predominant, B. Casein predominant, C. Both of the above, D. None of the above', 'role': 'user'}, {'content': "Answer: B \nExplanation: Casein dominant formulas or cow's milk has higher concentration of aromatic acids like tyrosine and phenylalanine that may lead to late metabolic acidosis. Ref: Nutrition and Child Development, K.E. Elizabeth, 4th edition pg: 26", 'role': 'assistant'}]