What is true about 'Saheli??
$I$. Developed at $CDRI$, Lucknow
$II$. Contains a steroidal preparation
$III$. 'Once-a-week' pill
$IV$. Many side effects
$V$. High contraceptive value
$VI$. Very few side effects
$VII$. Low contraceptive value
Progestasert and $LNG-20$ are
All the following statements are correct about 'Saheli', but one is wrong. Which one is wrong?
$A$ : Periodic abstinence is one such natural method of contraception in which the couples avoid or abstain from
coitus from day $10 \;to\; 17$ of the menstrual cycle, when ovulation could be expected.
$R$ : $Day \;10 \;to \;day \;17$ of menstrual cycle is considered as safe period
What is the function of copper $T ?$