<prompt> Most common cause aof ambigious genitalia in a female child isPlacenta steriod sulfatase deficiencyFetal aromatase deficiencyWnt4 mutationCongenital adrenal hyperplasia  <response>: CONGENITAL ADRENAL HYPERPLASIAClinical presentation: Ambiguity of sex detected at birth are due to androgenital syndrome unless proved otherwise. Hirsutism and amenorrhea may be presenting features around puberty in milder formDiagnosis at birthAn enlarged clitorisPresence of penile urethra or hypospadiusHyponatremia,hypakalemia and hypotensionFusion of labia minora 