This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Contraception, Subject name: Gynaecology & Obstetrics
All are long acting reversible contraceptives except : 
Select and explain. 
A. Implanon, B. IUCD, C. jadelle, D. OCP
D: OCP
Answer: D: OCP 
Explanation: IUCD is an effective, reversible and long term method of contraception Implanon and Jadella are subdermal implants which are effective for about 1-5 years Ref: Shaw Gynecology 17 e pg 267.