This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolic Disorders of Bone, Subject name: Orthopaedics
[{'content': 'Drug of choice for bisphosphonate resistant osteoporosis : \nSelect and explain. \nA. Teriparatide, B. Denosumab, C. Anakinra, D. Calcitonin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Drug of choice for both senile and postmenopausal osteoporosis are Bisphosphonates. However, where osteoporosis is Resistant to bisphosphonates, Teriparatide has shown good results.', 'role': 'assistant'}]