The following contraceptive acts primarily by
interfering with implantation of blastocyst:
A. Gossypol
B. Centchroman
C. Combined estrogen-progestin pill
D. Phased pill
interfering with implantation of blastocyst:
A. Gossypol
B. Centchroman
C. Combined estrogen-progestin pill
D. Phased pill