The first pill of oral contraceptives starts on which day after starting of menstruation

Q. The first pill of oral contraceptives starts on which day after starting of menstruation
A. 1st day
B. 3rd day
C. 5th day
D. 7th day
Answer: 5th day

A. 1st day
B. 3rd day
C. 5th day
D. 7th day
Answer: 5th day