<prompt> Least failure rate is seen in which IUD -CUT-200Lippes loodLNG-IUDNova-T  <response>: Ans. is c i.e, LNG-IUD IUD devicePregnancy failure rateExpulsion rateFirst generation Lippes loop3?0 maximum19?1 maximumSecond generation CuT - 36 CuT -2003?07?8 CuT - 380A0?5 - 0?85 Nova T0?75?8 Multiload - 2500?52?2 Multiload -3750?12?1Third generation Progstasert1?53 minimum LNG-IUD0?2 minimum6 