This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': 'Which among the following is the Glucocoicoid receptor blocker? \nSelect and explain. \nA. Mifepristone, B. Ketoconozole, C. Mitotane, D. Trilostane', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Mifepristone is anti-progesterone as well as mild glucocoicoid blocker.Ketoconazole, Mitotane, and Trilostane inhibits the synthesis of glucocoicoidsRef: Goodman Gillman 12th ed.Pg: 1184', 'role': 'assistant'}]