Which of these statements does NOT describe sex differentiation

A)A Y chromosome stimulates production of H-Y antigen by primitive gonadal cells.
B)Early in development, embryos of both sexes have the same indifferent reproductive tissues capable of differentiating into either a male or female reproductive system.
C)Secretion of testosterone and Müllerian-inhibiting factor by the fetal testes induces development of the reproductive tract and external genitalia along male lines.
D)Ovaries must be present for feminization of the reproductive tract and external genitalia to occur.