Distinguish between: Pre-fertilization events and Post-fertilization events.

• A
  Pre-fertilization events involve gametogenesis and gamete transfer,while post-fertilization events involve zygote formation and embryogenesis.
• B
  Pre-fertilization events occur before the fusion of gametes,whereas post-fertilization events occur after the fusion of gametes.
• C
  Pre-fertilization events lead to the formation of a zygote,while post-fertilization events lead to the development of an embryo.
• D
  All of the above.