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
[{'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: None', 'role': 'assistant'}]