This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
[{'content': 'Which of the following DPP IV inhibitors does not require dose modification in Chronic kidney disease patients \nSelect and explain. \nA. Sitagliptin, B. Vildagliptin, C. Linagliptin, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Linagliptin is is DPP IV inhibitors does not require dose modifications in Chronic kidney disease patients and can be used even in stage 5 ckd patients .', 'role': 'assistant'}]