Which of the Following BEST Describes the Development of Sexual

Which of the following BEST describes the development of sexual structures in mammals?

A) Embryos develop male structures only when the SRY gene in the Y chromosome becomes active; if SRY is not present, they develop female structures.
B) Embryos initially develop female structures, but these degenerate and male structures develop once SRY becomes active.
C) Embryos initially develop both male and female structures; once SRY becomes active, female structures degenerate and male structures continue to develop.
D) Embryos initially develop male structures; if SRY is not present, these degenerate and female structures develop. If SRY is present, they continue to develop.
E) None of the answer options is correct.