This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Biochemistry
All are required for conversion of progesterone to estrogen except 
Select and explain. 
A. Lyase, B. 11-hydroxylase, C. Reductase, D. Isomerase
B: 11-hydroxylase
Answer: B: 11-hydroxylase 
Explanation: 11 - hydroxylase generates coisol from 11-deoxycoisol and coicosterone from 11-deoxycoicosterone.Ref: DM Vasudevan, 7th edition, page no: 665, fig 52.2 and 52.3