This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
What will happen if insulin alone is given rapidly in diabetic Ketoacidosis? 
Select and explain. 
A. Hypokalemia, B. Hypernatremia, C. Hyperkalemia, D. Hypocalcemia
A: Hypokalemia
Answer: A: Hypokalemia 
Explanation: When insulin therapy is instituted ketosis subsides and potassium ions are driven intracellularly. This lead to hypokalemia. 1st IV Fluids should be given then slow iv infusion of insulin should be staed if blood glucose levels reach below 300, dextrose has to be combined with the insulin to prevent hypoglycemia (REF.Essential of medical pharmacology K D TRIPATHI 6 Edition, Page No - 264)