Assertion (a): condom protects a person from the sexually transmitted diseases.
reason (r): condom prevents the sperms from meeting the ovum by acting as a barrier.
(1) If both assertion and reason are true and reason is the correct explanation of assertion.
(2) If both assertion and reason are true but reason is not the correct explanation of assertion.
(3) If assertion is true but reason is false.
(4) If both assertion and reason are false.