This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
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? 
Select and explain. 
A. 21 hydroxylase, B. 11  β hydroxylase, C. 17 α hydroxylase, D. 17, 20 Lyase
B: 11  β hydroxylase
Answer: B: 11  β hydroxylase 
Explanation: 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