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: Medicine
[{'content': 'Treatment of 42 year old obese man with blood glucose 450 mg, urine albumin 2+ Sugar 4+ Ketone 1+ is : \nSelect and explain. \nA. Insulin, B. Glibenclamide, C. Glipizide, D. Metformin', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' Insulin The patient is having diabetic ketoacidosis. (Ketones in urine and hyperglycemia).The only antidiabetic drug useful in any complications of diabetes (such as diabetic ketoacidosis, ischemia and gangrene) is Insulin. Oral hypoglycemics have no role in complicated diabetes.", 'role': 'assistant'}]