This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: New born infants, Subject name: Pediatrics
[{'content': 'The natural probiotic activity in breast milk is due to \nSelect and explain. \nA. Lactobacillus, B. Sacchromyces boullardi, C. Bifido bacterium, D. Bacillus cereus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The natural probiotic activity in the breast milk is due to lactobacillus it is the good bacteria of intestine . Reference: GHAI Essential pediatrics, 8th edition', 'role': 'assistant'}]