Assertion : Periodic abstinence is a natural method where couples abstain from coitus.
Reason : Coitus from day 5-10 should be avoided because this is the time of ovulation.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false