This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, Subject name: Pharmacology
[{'content': 'Drug used only for treatment of postprandial hyperglycemia is \nSelect and explain. \nA. Alpha glucosidase inhibitors, B. Rapaglinide, C. Sulfonylureas, D. Metformin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Alpha glucosidase inhibitors - effect on both prandial and post prandial sugar ,that act as competitive inhibitors of enzymes needed to digest carbohydrates Rapaglinide is used only for treatment of postprandial hyperglycemia Sulfonylureas is for maintenance of type 2 DIABETES MELLITUS Metformin is drug of choice for treatment of type 2 DIABETES MELLITUS', 'role': 'assistant'}]