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: Pediatrics
[{'content': 'What is the amount of trisodium citrate dihydrate in WHO ORS ? \nSelect and explain. \nA. 1.5 gm, B. 2.5 gm, C. 2.9 gm, D. 3.9 gm', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]