A 60-year-old man with type 2 diabetes on basal-bolus insulin therapy becomes sweaty, anxious and confused at home. Capillary glucose is 2.4 mmol/L. He is conscious and able to swallow safely. What is the most appropriate immediate management?AGive 20 g of fast-acting carbohydrate orally, such as sugary drink, and recheck glucose in 10–15 minutesBGive intramuscular Glucagon and call an ambulanceCGive 10 units of rapid-acting insulin subcutaneouslyDAsk him to eat a high-protein meal and recheck in the morningEDo nothing as his body will correct the low glucoseCheck my answer