This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Adrenal Gland, Subject name: Medicine
Which of the following variant of CAH presents with mineralocoicoid deficiency? 
Select and explain. 
A. 11b hydroxylase deficiency, B. 17a hydroxylase deficiency, C. P450 oxidoreductase dehydrogenase, D. 3b hydroxyl-steroid dehydrogenase
D: 3b hydroxyl-steroid dehydrogenase
Answer: D: 3b hydroxyl-steroid dehydrogenase 
Explanation: Deficiency in CAH Glucocoicoid Mineralocoicoid Androgens 21 hydroxylase Reduced Reduced Increased 3 b hydroxyl-steroide dehydrogenase Reduced Reduced Increased 11 b hydroxylase Reduced Increased Increased 17 a hydroxylase Reduced Increased Decreased P450 oxidoreductase Reduced Increased Decreased