A 29-year-old with known type 1 diabetes presents with DKA: glucose 520 mg/dL, pH 7.22, bicarbonate 10 mEq/L, anion gap 24, serum potassium 3.2 mEq/L. After initial isotonic fluids, what is the next best step?AStart IV insulin infusion at 0.1 units/kg/hour immediatelyBGive 0.1 units/kg IV bolus of insulin then start 0.1 units/kg/hour infusionCHold insulin and give IV potassium to raise K⁺ to ≥3.3 mEq/L, then start insulinDAdminister IV sodium bicarbonate because pH <7.25EUse subcutaneous rapid-acting insulin every 2 hours instead of IV insulinCheck my answer