This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Sodium and Potassium, Subject name: Pediatrics
The clinical consequences of hypokalemia in skeletal muscle include muscle weakness and cramps. What is the level of Serum Potassium at which Paralysis Is a possible complication of hypokalemia? 
Select and explain. 
A. Serum Potassium at 2.0 mEq/L, B. Serum Potassium at 2.5 mEq/L, C. Serum Potassium at 3.0 mEq/L, D. Serum Potassium at 3.5 mEq/L
B: Serum Potassium at 2.5 mEq/L
Answer: B: Serum Potassium at 2.5 mEq/L 
Explanation: Paralysis occurs when potassium levels are <2.5 mEq/L. It usually stas in legs and moves to arms