In Angiosperms, Meiosis of Cells in the Ovule Gives Rise

In angiosperms, meiosis of cells in the ovule gives rise to haploid megaspores. What happens next?

A) Mitosis gives rise to a seed.
B) Mitosis gives rise to a haploid egg and a cell with two nuclei.
C) Mitosis gives rise to a sporophyte.
D) Meiosis gives rise to a diploid egg and a cell with two nuclei.
E) Meiosis gives rise to a more megaspores.