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': 'Aldosterone antagonists are not useful in the treatment of \nSelect and explain. \nA. Hypeension, B. Congestive hea failure, C. Gynaecomastia, D. Hirsutism', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Aldosterone antagonists cause gynaecomastia as an adverse effect.', 'role': 'assistant'}]