A female child is brought with ambiguous genitalia and hyperpigmentation of skin. she has increased BP and hypokalemia. which of the following enzymes is deficient in this child?

21 hydoxylase deficiency 11  β hydroxylase deficiency Virilisation of females Virilisation of females Precocious puberty in male Precocious puberty in male Salt losing Salt retention,hypertension  hyperkalemia Hyperkalemia