Fill in the blanck:
Oral contraceptive pills have to be taken daily for a period of …a… starting preferably within the first …b… of menstual cycle.
After a gap of …c… days (during which menstruation occurs) it has to be repeated in the same pattern till the female desires to prevent conception.

Options

A. a-25 days, b-7 days, c-5 days
B. a-21 days, b-5 days, c-7 days
C. a-21 days, b-7 days, c-7 days
D. a-14 days, b-5 days, c-7 days

Answer

B

Explanation

Oral contraceptive pills have to be taken daily for a period of 21 days starting preferbly within the first 5 days of menstrual cycle.
After a gap fo 7 days (during which menstructin occurs) it has to be repeated in the same pattern till the female disires to prevent conception.