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': 'Most common organism associated with cystic fibrosis \nSelect and explain. \nA. Pseudomonas aeruginosa (non mucoid), B. Burkholderia cepacia, C. Pleisomonas, D. Aeromonas', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pseudomonas may colonise s of patients with cystic fibrosis and causes recurrent pulmonary exacerbations. Ref : Essential pediatrics,O.P.Ghai,7 th edition,pg no:355', 'role': 'assistant'}]