Moths Visit Night-Blooming Cereus Flowers in the Evening and Pass

Moths visit night-blooming cereus flowers in the evening and pass pollen from one flower to another while collecting nectar.Once in contact with a stigma, these pollen grains germinate into tubes and extend through the maternal sporophyte tissue to the female gametophyte, where two sperm cells are released.Which statement accurately describes the process that ensues once the sperm cells meet the female gametophyte?

A) Once the sperm and egg nucleus fuse, pollination occurs and a zygote forms.
B) Once one of the sperm nuclei and the egg nucleus fuse, fertilization occurs and the second sperm cell degenerates.
C) Once the pollen tube reaches the female gametophyte, one of the sperm cells fertilizes the egg, and the other fertilizes the polar nuclei.
D) Once the pollen tube reaches the female gametophyte, one of the sperm cells fertilizes the egg, and the other pollinates the polar nuclei.
E) Once the pollen tube reaches the female gametophyte, one of the sperm cells pollinates the egg, and the other fertilizes the polar nuclei.

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