This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid, Electrolyte, Subject name: Pediatrics
Na content (mEq/L) in Normal saline is: 
Select and explain. 
A. 111, B. 130, C. 135, D. 154
D: 154
Answer: D: 154 
Explanation: None