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
Which is the safest contraceptive method for a woman with sickle-cell anaemia ? 
Select and explain. 
A. Intrauterine device, B. Low dose progesterone pill, C. Condom or diaphragm, D. Low dose oestrogen-progesterone
C: Condom or diaphragm
Answer: C: Condom or diaphragm 
Explanation: Condom or diaphragm