Which of the following has been used for emergency contraception?

Tablets to prevent contraception contain

Oral contraceptives inhibit $A$ and implantation as well as the quality of cervical $B$ to prevent the entry of sperms. Choose the correct option for $A$ and $B$ to complete the given statement.

Match the following methods $(A-D)$ with their mode of action $(i-iv)$ for contraception and select the correct option:

Method	Mode of Action
$(A)$ Pills	$(i)$ Prevents sperm from reaching the cervix
$(B)$ Condom	$(ii)$ Prevents implantation
$(C)$ Vasectomy	$(iii)$ Inhibits ovulation
$(D)$ Copper-$T$	$(iv)$ Semen contains no sperm

Lactational amenorrhoea is a natural way of birth spacing. It is due to the high level of

Example of copper releasing $IUD$ is