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': 'All of the following drugs can cause gynaecomastia except: \nSelect and explain. \nA. Digoxin, B. Amiloride, C. Cimetidine, D. Spironolactone', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]