Assertion: Human sperm is a microscopic structure composed of a head, neck, a middle piece and a tail.
Reason: The functions of the male sex accessory ducts and glands are maintained by the testicular hormones (androgens).
A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.