This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Antibiotics, Subject name: Pharmacology
Which among the following is the Glucocoicoid synthesis inhibitor? (Repeat) 
Select and explain. 
A. Mifepristone, B. Ketoconazole, C. Letrozole, D. Anastrozole
B: Ketoconazole
Answer: B: Ketoconazole 
Explanation: Ketoconazole, Mitotane, and Trilostane inhibit the synthesis of glucocoicoids.Ref: Goodman Gillman 12th ed. Pg: 1184