This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, Subject name: Pharmacology
A patient with DKA is being treated with insulin. What abnormality is likely to develop in this patient? 
Select and explain. 
A. Hypocalcemia, B. Hypernatremia, C. Hyperkalemia, D. Hypokalemia
D: Hypokalemia
Answer: D: Hypokalemia 
Explanation: Insulin causes shift of K+ into cells leading to decrease in serum potassium. In a patient of DKA, there is already a K+deficit in the patient. Giving insulin therapy alone will cause severe hypokalemia. So a supplement potassium must be given along with it and K+levels must be closely monitored.