66. 在先天性腎上腺增生(congenital adrenal hyperplasia)的六大類型中,最常見的enzyme deficiency 是下列何者? (A) 11 β-Hydroxylase (B) 17 a -Hydroxylase (C) 21-Hydroxylase (D) 3 B-Hydroxysteroid Dehydrogenase