This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'A child suffering from acute diarrhoea is brought to the casualty and is diagnosed as having severe dehydration with pH of 7.23. Serum Na-125, Serum K-3, HCO3 16. The best I.V. fluid of choice is - \nSelect and explain. \nA. 3% Saline, B. N/3 Saline + 10% dextrose, C. Normal saline, D. N/3 saline + 5% dextrose', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]