<prompt> Which of the following contraceptive methods has a failure rate of less than 5 in 100 womanVaginal spongeCopper TDiaphragmCondom  <response>: Ans b Sheila balakrishnan pg342Pearl Index Pregnancy ratelOOwoman years rings combined estrogen, progesterone ring-0.3Emergency contraception - Levonorgestrel -1.1Yuzpee regimen 3.2Copper TCuT.380A, Mirena 0.2Male condoms-12 