This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Which of the about the composition of new ORS is wrong? \nSelect and explain. \nA. NaCl-2.6 grams\\/litre, B. KCI - 1.5grams \\/litre, C. Glucose - 13.5 grams\\/litre, D. Total osmolarity - 300 mmol\\/1', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Total osmolarity is 245 mmol/litre. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:224. <\\p>', 'role': 'assistant'}]