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': 'Type I Diabetes Mellitus is initially managed by:- \nSelect and explain. \nA. Metformin, B. Sulfonylureas, C. Meglitinides, D. Insulin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Insulin is the only treatment of Type 1 DM. Pramlintide is also approved for Type 1 diabetes along with insulin. DOC for Type 2 DM is Metformin.', 'role': 'assistant'}]