Oral contraceptive pills are of different types. Which type is most appropriate for mothers who are breastfeeding?

Choice A rationale 21-day mixed type pills contain estrogen and progesterone, which can reduce milk supply in breastfeeding mothers and are not recommended. Choice B rationale Mixed type pills with estrogen and progesterone are not ideal for breastfeeding mothers as estrogen can interfere with milk production and affect milk quality. Choice C rationale Estrogen-only pills are not suitable for breastfeeding mothers as estrogen can decrease milk supply and affect infant feeding patterns, leading to poor weight gain in infants. Choice D rationale Progesterone-only pills are recommended for breastfeeding mothers as they do not affect milk supply and are safe for the infant while providing effective contraception.