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: Social & Preventive Medicine
[{'content': 'Ratio of Sodium : Glucose in WHO Reduced Osmolarity ORS is \nSelect and explain. \nA. 1:04, B. 1:01, C. 1:03, D. 1:02', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]