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
Most common enzyme deficiency leading to childhood hypertension is – 
Select and explain. 
A. 17–Alpha hydroxylase, B. 21–Beta hydroxylase, C. 11–Beta hydroxylase, D. 3–Beta hydroxy steroid dehydrogenase
C: 11–Beta hydroxylase
Answer: C: 11–Beta hydroxylase 
Explanation: Salt retention and hypertension is seen in 17-α hydroxylase deficiency and 11-β hydroxylase deficiency.
11-β hydroxylase deficiency is more common.
17-α hydroxylase deficiency is an uncommon form of congenital adrenal hyperplasia.