The most important component of oral contraceptive is

How do injectable contraceptives ($DMPA$ - Depot Medroxyprogesterone Acetate) prevent ovulation?

Choose the incorrect sentence regarding the physical contraception method.

Generally,which of the following is not used as a female contraceptive?

$A$: Saheli - the new oral contraceptive for the female contains a non-steroidal preparation.
$R$: It is a 'once a week' pill with very few side effects and high contraceptive value.

Match the contraceptive methods given under column-$I$ with their examples given under column-$II$. Select the correct choice from those given below.

Column $I$	Column $II$
$A$. Chemical	$p$. Tubectomy and vasectomy
$B$. $IUDs$	$q$. Copper $T$ and loop
$C$. Barriers	$r$. Condom and cervical cap
$D$. Sterilisation	$s$. Spermicidal jelly and foam
	$t$. Coitus interruptus and calendar method