This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Social & Preventive Medicine
Highest Contraceptive failure is repoed in 
Select and explain. 
A. Spermicidal methods, B. Implant, C. Oral contraceptive pills, D. IUD
A: Spermicidal methods
Answer: A: Spermicidal methods 
Explanation: - Spermicidal methods has pearl index of 10-25 / HWY ( Highest ). - Contain chemical - Non oxynol 9 - MOA - By rupture of plasma membrane of Acrosomal cap.