Concerning Sexual Development, Which of the Following Statements Is FALSE

Concerning sexual development, which of the following statements is FALSE?

A) Development of male or female genitals before birth is due to the presence or absence of estrogen.
B) If a Y chromosome is present, the testes develop in the embryo and supply testosterone.
C) Sexual differences are determined by the balance of androgens and estrogens.
D) In the absence of testosterone, the embryo will develop female organs and genitals, regardless of genetic sex.