Which response is appropriate when the parents of a school-age child with cystic fibrosis inform the nurse that they have changed to a natural pancreatic enzyme because it is cheaper?

A. "You don't need to give the enzymes now that your child is in school."
B. "Natural enzymes don't have any side effects and can be taken without regard to meals."
C. "If you are using generic enzymes, you will need to give twice as many to achieve the required effect."
D. "Natural enzymes are not as effective as the brand-name product."

Confident
Not Sure