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': 'Energy to protein ratio in human milk is: \nSelect and explain. \nA. 20, B. 55, C. 70, D. 80', 'role': 'user'}, {'content': "Answer: C \nExplanation: Energy to protein ratio is 70 in human milk as compared to 25 in cow's milk. Ref: Nutrition and Child Development, K.E. Elizabeth, 4th edition pg: 26", 'role': 'assistant'}]