This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of pituitary gland, Subject name: Medicine
[{'content': 'Which of the following hormones is responsible for inhibiting lactation during pregnancy? \nSelect and explain. \nA. Progesterone, B. Human placental lactogen, C. Oxytocin, D. Prolactin', 'role': 'user'}, {'content': "Answer: A \nExplanation: Lactation is d/t Prolactin so it cannot inhibit lactation Progestrone: Maintain pregnancy & during pregnancy inhibits Lactation. Post delivery its effect is gone so doesn't inhibit Lactation. Oxytocin: has no role in lactation, its function is milk production.", 'role': 'assistant'}]