Which of the following is correct about human Reproduction ?
A. Saheli is a new contraceptive for males
B. Amniocentosis is carried out to know the chromosomal pattern from the sample taken from the sample taken from the cells of umbilical cord.
C. Ovulation is facilitated by breast-feeding
D. A combination of progesterone and oestrogen is injected or implanted under the skin as an effective contraceptive
