<prompt> Most common enzyme deficiency leading to childhood hypertension is17Alpha hydroxylase21Beta hydroxylase11Beta hydroxylase3Beta hydroxy steroid dehydrogenase  <response>: 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. 