All the following statements are correct about 'Saheli',but one is wrong. Which one is wrong?

Which of the following approaches does not give the defined action of contraceptive?

Implants under the skin and injectables contain:

Select the hormonal $\text{IUD}$.

Use of Intra Uterine Devices $(IUDs)$ is one of the most widely accepted methods of contraception in India; because

Find out the correct aspects of lactational amenorrhoea.
$I$. Ovulation does not occur during the lactational period.
$II$. Chances of the failure of contraception are almost nil up to six months following parturition.
$III$. Side effects are almost nil.
$IV$. It is a natural method of contraception.
$V$. It increases phagocytosis of sperms.