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': "All the following are true about cow&;s milk Except \nSelect and explain. \nA. Cow's milk contains 80% whey protein not casein, B. Cow milk has less carbohydrate than mothers milk, C. Has more K+ and Na+ than infant formula feeds, D. Has more protein than breast milk", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Human milk contains only 1-1.5% protein compared with approximately 3.3% in cow&;s milk.The increased protein of cow&;s milk results almost entirely from its 6 fold higher content of casein. Human milk protein consists of approximately 75% whey proteins & 25% casein; The cow&;s milk ratio is reversed to 22:78. Ref: Page 156; Nelson textbook of pediatrics; 20th edition', 'role': 'assistant'}]