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
[{'content': 'Which among the following is the Glucocoicoid synthesis inhibitor? (Repeat) \nSelect and explain. \nA. Mifepristone, B. Ketoconazole, C. Letrozole, D. Anastrozole', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ketoconazole, Mitotane, and Trilostane inhibit the synthesis of glucocoicoids.Ref: Goodman Gillman 12th ed. Pg: 1184', 'role': 'assistant'}]