Assertion: Head of sperm consists of acrosome and mitochondria.
Reason: Acrosome contains spiral row of mitochondria.
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 the assertion is true but reason is false.
D. If both assertion and reason are false.