This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2018, Subject name: Orthopaedics
[{'content': 'Which drug increase the bone formation in osteoporosis? \nSelect and explain. \nA. Teriparatide, B. Risedronate, C. Calcitonin, D. Denosumab', 'role': 'user'}, {'content': 'Answer: A \nExplanation: * Increased bone formation: Parathyroid hormone, Teriparatide, Fluoride* Decreased bone resorption: Bisphosphonates, calcitonin, denosumab, estrogen * Drug performing both the action: Strontium', 'role': 'assistant'}]