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
[{'content': 'The DCCT (Diabetes Control & Complication Trial) provided definitive proof that reduction in chronic hyperglycemia helps to improve: \nSelect and explain. \nA. Micro vascular complications of Type I DM, B. Macro vascular complications of Type I DM, C. Micro vascular complications of Type II DM, D. Macro vascular complications of Type II DM', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]