This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography and Family Planning, Subject name: Social & Preventive Medicine
Least failure rate is seen in which IUD - 
Select and explain. 
A. CUT-200, B. Lippes lood, C. LNG-IUD, D. Nova-T
C: LNG-IUD
Answer: C: LNG-IUD 
Explanation: Ans. is 'c' i.e, LNG-IUD IUD devicePregnancy (failure) rateExpulsion rateFirst generation * Lippes loop3[?]0 (maximum)19[?]1 (maximum)Second 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 (minimum)6