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
[{'content': 'Na content (mEq/L) in Normal saline is: \nSelect and explain. \nA. 111, B. 130, C. 135, D. 154', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]