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: Pharmacology
Mechanism of action Trilostane ? 
Select and explain. 
A. 11 beta hydroxylase inhibitor, B. 1 alpha hydroxylase inhibitor, C. 3 betahydroxysteroiddehydrgenase inhibitor, D. 7 alpha hydrolase inhibitor
C: 3 betahydroxysteroiddehydrgenase inhibitor
Answer: C: 3 betahydroxysteroiddehydrgenase inhibitor 
Explanation: Ans. is 'c' i.e., 3 beta hydroxyl steroid dehydrogenase inhibitor