Why Is Male Reproductive Success Limited by the Number of Eggs

Why is male reproductive success limited by the number of eggs?

A) Sperm are short lived compared to eggs and it is more expensive for males to reproduce because males produce a much greater number of gametes than there are eggs available to fertilize.
B) Eggs are much larger and scarcer than sperm, limiting the number of opportunities for reproductive success for males.
C) Eggs are smaller than sperm and short lived, limiting the number of opportunities for reproductive success for males.
D) Although eggs are not metabolically expensive to produce, most female organisms will only produce a small number of eggs during their life span.