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: Pharmacology
[{'content': 'Anti-diabetic effect of sulfonylureas is by reducing: \nSelect and explain. \nA. Glucagon production, B. Insulin secretion, C. Tissue sensitivity to insulin, D. Tissue sensitivity to glycogen', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. (A) Glucagon production(Ref: KDT 8/e p294)Sulfonylureas act byIncreasing insulin release from pancreas (not by decreasing insulin secretion), so 'option b' ruled out.A minor action reducing glucagon and increasing somatostatin release has been demonstrated.", 'role': 'assistant'}]