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': 'Which is the safest contraceptive method for a woman with sickle-cell anaemia ? \nSelect and explain. \nA. Intrauterine device, B. Low dose progesterone pill, C. Condom or diaphragm, D. Low dose oestrogen-progesterone', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Condom or diaphragm', 'role': 'assistant'}]