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: Medicine
Which one of the following oral hypoglycemic agents is not an insulin secretogogue? 
Select and explain. 
A. Gliclazide, B. Glimiperide, C. Repaglinide, D. Rosiglitazone
D: Rosiglitazone
Answer: D: Rosiglitazone 
Explanation: None