Why Is Fertilization in Flowering Plants Called Double Fertilization

Multiple Choice

Why is fertilization in flowering plants called double fertilization?

A) it takes two pollen grains to fertilize a single ovule
B) two ovules must be fertilized to form a single seed
C) two cells in the ovule are fertilized, the egg and the endosperm mother cell
D) one pollen grain fertilizes two ovules
E) it takes the efforts of two flowers (male and female) to produce seeds