<prompt> Which of the following is the least common cause of ambiguous genitalia in a female childFetal placental steroid sulfatase deficiencyFetal placental aromatase deficiencyCongenital adrenal hyperplasiaWNT4 gene mutation  <response>: Placental steroid sufatase deficiency is an X-linked disorder affects only males that does not lead to ambiguous genitalia in a female child.Placental steroid suflatase deficiency is a rare X-linked disorder and all affected fetuses are males Williams 22nd81Congenital adrenal hyperplasia is the most common cause of ambiguous genitalia in female child.Fetal placental aromatase deficiency and WNT-4 gene mutation cause ambiguous genitalia in female child. 