Which of the following approches does not give the defined action of contraceptive
A. Vasectomy - Prevents spermatogenesis
B. Barrier methods -Prevents fertillization
C. Intra- uterine devices - Increase phagocyosis of sperms suppress sperm motiliity and fertilizing capacity of sperms
D. Hormonal cantraceptives - Prevent / retard entry of sperms , prevent ovulation
