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': 'Cutoff value of sweat chloride values above which 2 consistantly higher reading is diagnostic for Cystic fibrosis is \nSelect and explain. \nA. 40 mEq / L, B. 50 mEq / L, C. 60 mEq / L, D. 70 mEq / L', 'role': 'user'}, {'content': 'Answer: C \nExplanation: One or more clinical features of Cystic Fibrosis\n+\nTwo consistently > 60 mEq / L Sweat chloride\nvalues is diagnostic of Cystic fibrosis.', 'role': 'assistant'}]