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': 'Following are the adverse effects of estrogens except: \nSelect and explain. \nA. Supression of libido, B. Fusion of epiphyses, C. Hot flushes, D. Gynaecomastia in males', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]