Which Step Is Not Involved in the Fertilization of Angiosperm

Which step is not involved in the fertilization of angiosperm flowers?

A) Pollen is transported to a stigma of a flower.
B) When pollen reaches the stigma of a flower,it begins to grow a pollen tube that pierces the style.
C) The style of the pistil contracts to bring the sperm closer to the embryo sac.
D) The pollen tube grows until it reaches the ovule in the ovary.
E) Double fertilization produces an embryo and the endosperm.