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
When comparing breast milk vs. cow's milk, which of the following is higher in Cow milk? 
Select and explain. 
A. kcal/cc, B. Concentration of casein protein, C. Carbohydrate content, D. Fat content
B: Concentration of casein protein
Answer: B: Concentration of casein protein 
Explanation: Ans. B. Concentration of casein proteinThe kcal/cc are about the same. Both, cow and human milk contains approximately 2/3(0.66)kcal/cc(20kcal/oz).Whey: Casein of human milk is 70:30 as compared to a ratio of 18:82 for cow milk.The carbohydrate content is about the same.Lipids constitute approximately 50% of the calories in human milk (5.7g/100kcal) and standard infant formula (4.4-6.0g/100kcal).