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: Dental
[{'content': "Compared to cow's milk, mother's milk has more \nSelect and explain. \nA. Lactose, B. Fat, C. Proteins, D. Vitamin D", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]