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': 'A 45 years old female diabetic patient on insulin is brought to hospital in unconscious state. What is the first line of treatment? \nSelect and explain. \nA. I.V.insulin, B. I.V.infusion of dextrose, C. I.V.dexamethasone injection, D. Blood glucose test', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]