Assertion : Periodic abstinence is a method in which couples avoid from coitus from day 17 to 27 of menstrual cycle
Reason : Periodic abstinence is very effective method and 100 % sure of birth control

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false

Answer

D

Explanation

Periodic abstinence is a natural method in which the couples avoid or abstain from coitus from day 10 to 17 of the menstrual cycle when ovulation could be expected. The effectivenes of this method is limited because only a few women have regular menstrual cycle and thus the actual time of ovulation cannot be predicted as the ovulation in humans occurs about 14 days before the onset of the next menstruation.