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: Medicine
Treatment of 42 year old obese man with blood glucose 450 mg, urine albumin 2+sugar 4+ketone 1+ is 
Select and explain. 
A. Insulin, B. Glibenclamide, C. Glipizide, D. Metformin
A: Insulin
Answer: A: Insulin 
Explanation: Answer is A (Insulin): Presence of sugar and ketones in urine and the presence of hyperglycemia (400 mg Glucose) suggests a diagnosis of Diabetic ketoacidosis. The treatment of choice in Diabetic ketoacidosis is Insulin.