Correct Answer - B
LNG-20 is a hormone releasing IUD, that makes the uterus unsuitable for implantation and cervix hostile to sperm. Intra uterine devices are plastic or metal objects which are inserted by the doctors into the uterus through vagina. These are available as: Non-medicated IUDs(i.e.lippes loop)
Copper relasing IUDs(e,g.multiload 375)
Cervical caps and vaults are made up of rubber and are inserted into the female repoductive tract to cover the cervix before coitus, they prevent conception.
