Certain contraceptive methods are given below.
(a) Multiload 375
(b) Periodic abstinence
(c) Diaphragm
(d) Oral pills
(e) Lactational amenorrhea
(f) Tubectomy
Which of the above methods prevent meeting of gametes without interfering gametogenesis and coitus?
(A) a, b, c, d
(B) b, c, d, e