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: Gynaecology & Obstetrics
[{'content': 'Multiple pregnancies occur most commonly with: \nSelect and explain. \nA. T. Clomiphene, B. T. Clomiphene and dexamethasone, C. T. Dexamethasone, D. Pulsatile GnRH therapy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pulsatile GnRH therapy', 'role': 'assistant'}]