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: Pediatrics
[{'content': 'In breast fed infant less chance of enteric infection is due to – \nSelect and explain. \nA. Breast milk nutrients, beneficial effect an immune system, B. Ig in breast milk, C. Sterile nature of breast milk, D. All of these', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]