This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Natural Methods, Barrier Methods, IUDs, OCPs, Subject name: Social & Preventive Medicine
[{'content': 'The failure rate of Condom with typical use is: \nSelect and explain. \nA. 10-14/HWY, B. 14- 17/HWY, C. 17-20/HWY, D. 20-25/HWY', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The failure rate of condom with Perfect use is 2 - 3/HWY Typical use is 10-14/HWY. PEARL INDEX OF DIFFERENT CONTRACEPTIONS: Male condoms - 2-14 / HWY Female condoms - 5-21 / HWY IUD - 1-5 / HWY OCPs - 0.1 - 2 /HWY Sterilization 0.1 / HWY Vaginal sponge - 9-20 / HWY - More effective method of sterilization is vasectomy > tubectomy.', 'role': 'assistant'}]