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
Which of the following drug causes osteonecrosis by giving IV route? 
Select and explain. 
A. Zolendronate, B. Dalteparin, C. Calcitriol, D. Zidovudine
A: Zolendronate
Answer: A: Zolendronate 
Explanation: Ans. is 'a' i.e., Zolendronate o Bisphosphonates (e.g. zolindronate) can cause osteonecrosis ofjaw.