This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Pediatrics
[{'content': 'Features of cystic fibrosis \nSelect and explain. \nA. Lung normal at bih, B. Low sweat choride tests, C. Autosomal dominant, D. Defect in Chromosome 11', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The sweat chloride is high(>60 mEq/L) Defect in long arm of chromosome 7 Autosomal recessive condition. Ref : Essential pediatrics,O.P.Ghai,7 th edition,pg no:369', 'role': 'assistant'}]