A 24-year-old man with type 1 diabetes is admitted with abdominal pain, vomiting, and Kussmaul breathing. Capillary glucose is 26 mmol/L, ketones are 5.5 mmol/L, and venous pH is 7.12. What is the single most important initial management step?AAdminister an IV insulin bolus followed by infusion without fluidsBGive a 1 L bolus of 0.9% sodium chloride over 1 hourCStart IV 5% dextrose immediately to correct hyperglycaemiaDRestrict fluids to avoid cerebral oedemaEGive IM Glucagon 1 mgCheck my answer