In Flowering Plants,an Event Known as Double Fertilization Occurs When

Multiple Choice

In flowering plants,an event known as double fertilization occurs when _____.

A) two sperm enter the ovule;one fertilizes the egg,and the other fertilizes a 2n cell to generate endosperm
B) two sperm cells fertilize one normal egg cell to make a 3n embryo,and the embryo later becomes 2n during a unique mitotic division
C) two eggs are simultaneously fertilized by two sperm nuclei
D) None of the above apply.