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: Social & Preventive Medicine
[{'content': 'The contraceptive method of choice (temporary) for 37 years old well educated woman: \nSelect and explain. \nA. Mala-N, B. Mala-D, C. IUD, D. Diaphragm', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Diaphragm', 'role': 'assistant'}]