The correct option is B non-hormonal oral contraception
Saheli is the first ever non-hormonal oral contraceptive pill developed by Central Drug Research Institute (CDRI), Lucknow. It contains a non-steroidal preparation called centchroman. This molecule offers its advantage in providing a combination of weak estrogenic and potent anti-estrogenic properties. This prevents the fertilised ovum from implantation by hastening its transfer to the fallopian tubes before it becomes ready for implantation and thus prevents pregnancy.