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
[{'content': 'Drug causing hirsuitism and gynaecomastia \nSelect and explain. \nA. Spironolactone, B. Rifampicin, C. Penicillin, D. Bumetanide', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Spironlactone", 'role': 'assistant'}]