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
Insulin release due to closure of K+ channels is seen with: 
Select and explain. 
A. Nateglinde, B. Acarbose, C. Exenatide, D. Sitagliptin
A: Nateglinde
Answer: A: Nateglinde 
Explanation: None