Mark the correct statement.

Progesterone in the contraceptive pill:

Give scientific reasons: Pills taken orally prevent pregnancy.

Which of the following is the world's first non-hormonal oral contraceptive pill for females,developed by scientists at the Central Drug Research Institute $(CDRI)$ in Lucknow,India?

Which of the following have been found to be very effective as emergency contraceptives,as they could be used to avoid possible pregnancy due to rape or casual unprotected intercourse if administered within $72$ hours?
$A.$ Administration of progestogens
$B.$ Progestogen-estrogen combinations
$C.$ $IUDs$ inserted within $72$ hours of coitus

$Cu$ ions released from copper-releasing intrauterine devices $(IUDs)$: