This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Medical, surgical and gynaecological illness complicating pregnancy, Subject name: Gynaecology & Obstetrics
[{'content': 'For fetal lung maturation, all the coicosteroids can be used except \nSelect and explain. \nA. Betamethasone, B. Dexamethasone, C. Hydrocoisone, D. Methylprednisolone', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Methylprednisolone is not effective because of poor placental transfer', 'role': 'assistant'}]