A 62-year-old man on Basal–bolus insulin for type 2 diabetes becomes sweaty, tremulous and confused on the ward. Capillary glucose is 2.4 mmol per litre. He is conscious and able to swallow. What is the most appropriate immediate treatment?AIntravenous 10 percent dextrose bolusBIntramuscular Glucagon followed by dextrose infusionCGive 15 to 20 g of rapid-acting carbohydrate orally, then longer-acting carbohydrateDGive his usual rapid-acting insulin dose with foodEObserve without treatment and repeat glucose in 30 minutesCheck my answer