A nurse is teaching dietary guidelines to a client who has celiac disease. Which of the following food choices is appropriate for this client?

A. White flour tortillas contain gluten and should be avoided. B. Wheat crackers contain gluten and are inappropriate for celiac disease. C. Potato pancakes are a gluten-free option and appropriate for a client with celiac disease, as they do not contain wheat, barley, or rye. D. Barley soup contains gluten and is not safe for clients with celiac disease.