If a Woman Can Produce Gametes with X Chromosomes, and a Man

If a woman can produce gametes with X chromosomes, and a man can produce gametes with either an X or a Y chromosome, and the resulting offspring will be made up of one gamete from each parent, does the father or the mother determine the gender of the baby?

A) Neither determines it because it's random.
B) Both determine it because they both contribute a gamete.
C) The father because he can contribute either an X or Y gamete.
D) The mother because she contributes the X gamete.
E) The embryo actually determines its own gender.