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': 'The concentration of potassium in micro gram in ORS is – \nSelect and explain. \nA. 30 meq, B. 20 meq, C. 90 meq, D. 60 meq', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]