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
A 70 years old hypeensive patient with stage 5 chronic kidney disease was diagnosed recently with Type 2 diabetes mellitus. He doesn't want to take injectable insulin. Which of the following oral hypoglycemic agents will be preferred in this patient, which won't require any renal dose modification? 
Select and explain. 
A. Linagliptin, B. Repaglinide, C. Vildagliptin, D. Glimepiride
A: Linagliptin
Answer: A: Linagliptin 
Explanation: Answer- A. Linagliptinlinagliptin has the ability to be safely dosed in chronic kidney disease patients. Chronic kidney disease is a major complication in type 2 diabetesLinagliptin .No dose required linagliptin for patients with renal impairment