A 30-year-old breastfeeding woman, 6 weeks postpartum, seeks contraception. She has no significant medical history and wishes to avoid oestrogen. Which contraceptive method is most appropriate first-line?ACombined oral contraceptive pillBProgestogen-only pill or levonorgestrel intrauterine deviceCCopper intrauterine device onlyDDepot medroxyprogesterone acetate should be avoided while breastfeedingEBarrier methods only until 6 months postpartumCheck my answer