This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
[{'content': 'Milk is stored before ejection in \nSelect and explain. \nA. Lactiferous ducts, B. Alveoli, C. Nipple, D. Stroma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Lactiferous ducts one of the ducts, numbering 15-20, which drain the lobes of the mammary gland; they open at the nipple.Ref: Ganong&;s review of medical physiology;24th edition; page no:-416', 'role': 'assistant'}]