This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diabites & Inappropriate Antidiuretic Hormone, Subject name: Medicine
[{'content': 'Best drug to be used in obese type 2 diabetes meiiitus patient? \nSelect and explain. \nA. Metformin, B. Glipizide, C. Pioglitazone, D. Exenatide', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) MetforminRef.: Harrison 19th ed. / 2413-14* Drug of choice for obese type 2 diabetes mellitus is metformin. This drug increases the peripheral utilization of sugar by sensitizing the receptors. The fall in HbAlc is 1-2%.', 'role': 'assistant'}]