How does Paragraph 5 refine the claim that "the text on the package does not always tell the whole story" about pet food?

A. It differentiates between pet food brands that do and do not contain superior quality ingredients.
B. It explains the details included on labels that are not necessarily relevant to a pet owner’s food choice.
C. It defines the real meaning of terms that may appear on pet food labels without a full explanation for the consumer.
D. It reassures readers that the AAFCO requires labels to follow a specific checklist that ensures their usefulness.