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: Orthopaedics
[{'content': 'Drug that does not lead to osteoporosis \nSelect and explain. \nA. Alcohol, B. Thyroxine, C. Heparine, D. Warfarine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Drugs leading to osteoporosis -\xa0\nAlcohol\nLithium\nAnticonvulsants\xa0\nThyroxine\nHeparine\xa0\nSteroids', 'role': 'assistant'}]