This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non-Hormonal -  Intrauterine Devices , Subject name: Gynaecology & Obstetrics
All ICUD's are changed every 4-5 year except 
Select and explain. 
A. Cu-280, B. Cu-320, C. Multiload devices, D. Progestasert
D: Progestasert
Answer: D: Progestasert 
Explanation: Progestasert is an IUCD which is changed after 1 year (IUCD with shortest life span)*Most of the IUCDs have an average life span of - 3 yrs.Exceptions are -Nova T - 5 yrs*.CuT380A - 10 yrs*.Progestasert - 1 yrs*.