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
Sulphonylureas act by: 
Select and explain. 
A. Reducing the absorption of carbohydrate from the gut, B. Stimulating the beta islet cells of pancreas to release  insulin, C. Increasing the uptake of glucose in peripheral tissue, D. Reducing the hepatic gluconeogenesis
B: Stimulating the beta islet cells of pancreas to release  insulin
Answer: B: Stimulating the beta islet cells of pancreas to release  insulin 
Explanation: None