This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Gastrointestinal System Including Diarrhea, Subject name: Pediatrics
[{'content': 'A child presents with acute diarrhea with signs of dehydration; On investigation, Na+ 125 mEq/L, K+ 3 meq/L, HCO3- 16 mEq/L and pH is 7.23. IV Fluid to be given is? \nSelect and explain. \nA. Normal saline, B. 3% saline, C. N/2 saline + 10% dextrose, D. N/3 saline + 5% dextrose', 'role': 'user'}, {'content': 'Answer: A \nExplanation: * Hyponatremic dehydration is treated by correction of intravascular volume with isotonic fluid (NS or LR). * An overly rapid (>12 mEq/L over the first 24 hr) or overcorrection of serum sodium concentration (>135 mEq/L) is associated with an increased risk of central pontine myelinolysis.', 'role': 'assistant'}]