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': 'Which of the following drug causes osteonecrosis by giving IV route? \nSelect and explain. \nA. Zolendronate, B. Dalteparin, C. Calcitriol, D. Zidovudine', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Zolendronate o Bisphosphonates (e.g. zolindronate) can cause osteonecrosis ofjaw.", 'role': 'assistant'}]