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: Pharmacology
[{'content': 'All the drugs have anti-androgenic effects except \nSelect and explain. \nA. Progesterone, B. Dutasteride, C. Flutamide, D. Spironolactone', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Progesterone had mild androgenic effects except for 3rd gen progesterones which are devoid of androgenic effects Flutamide,nilutamide and bicalutamide are androgen antagonists. Finasteride and dutasteride 5 alpha reductase inhibiters Spironolatone is androgen receptor antagonist Ref: HL Sharma 3rd ed Pg 595', 'role': 'assistant'}]