Find out the correct statement

$I$. Pills prevent ovulation during use as contraception technique

$II$. Copper$-T$ prevents implantation

$III$. Vasectomy produces semen containing no sperm

$Statement 1$: Use of condoms is a safeguard against $AIDS$ and sexual diseases besides checking pregnancy

$Statement 2$: Certain contraceptives are planted under the skin of the upper arm to prevent pregnancy

$CuT, LNG-20$ and $Cu7$ are examples of

Saheli – the new oral contraceptive for the females contains a …………

The most important component of the oral contraceptive pills is