This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and Health, Subject name: Social & Preventive Medicine
[{'content': 'Total osmolarity of reduced osmolarity ORS - \nSelect and explain. \nA. 270, B. 245, C. 290, D. 310', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 245 * Osmolarity of new ORS (reduced osmolarity ORS) is 245 mmol/litre.Composition of reduced osmolarity ORSReduced osmolarity ORSgrams/litreSodium chloride2.6Glucose, anhydrous13.5Potassium chloride1.5Trisodium citrate, dihydrate2.9Total weight20.5Reduced osmolarity ORSmmol/litreSodium75Chloride65Glucose, anhydrous75Potassium20Citrate10Total osmolarity245", 'role': 'assistant'}]