An 18-month old has been hospitalized six times for upper airway infections. Diagnostic studies including sweat analysis confirm the diagnosis of cystic fibrosis. Which of the following statements describes the inheritance pattern for cystic fibrosis?

A An affected gene is inherited from both the father and mother, who remain symptom free. C Autosomal recessive disorders tend to skip generations, so the children of affected parents will have children with the disorder. B Males are at risk at twice the rate as females. D The disorder is transmitted by an affected gene on one of the six chromosomes.