<prompt> Following is true about cystic FibrosisNasal polyposis is absentSweat chloride levels 30 mmol L is diagnosticStaphylococcus is most common pathogen causing infection in cystic fibrosis in adults.Chromosome - 7 genetic defect  <response>: In adults pseudomonas is most common arganism causing infection in cystic fibrosis adult patients.Sweat chloride levels 60 mmol L is diagnostic.Nasal polyps is present. 