This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Contraceptives, Subject name: Gynaecology & Obstetrics
Life span of LNGIUD is - 
Select and explain. 
A. 2 years, B. 5 years, C. 10 years, D. 12 years
B: 5 years
Answer: B: 5 years 
Explanation: Ans. is 'b' i.e., 5 years IUDsLife spanFirst generation:Lippe's loop (obsolete)--Second generationCopper-T--CuT-200-B4 yrCuT-2003yrCuT-220C--Nova-T5 yrMultiload - 2503 yr3755 yrCuT-3 80A10 yrThird generationProgestasert1 yrLNG-20 (Mirena)5 yr (Ref: Novak p263; Note that Park mentions the life span of mirena to be 10 yrs)