A nurse is teaching a client who is taking methotrexate and has stomatitis. Which of the following statements by the client indicates an understanding of the teaching?

A. "I will limit my alcohol intake to two drinks per day.": Alcohol increases the risk of hepatotoxicity when combined with methotrexate. Clients should avoid alcohol completely rather than limiting intake. B. "I should avoid eating foods that contain vitamin C.": Vitamin C does not worsen stomatitis or interact adversely with methotrexate. There is no need to avoid it in the diet. C. "I should rinse my mouth with a warm salt solution.": Salt water rinses help soothe oral irritation, reduce bacterial growth, and promote healing of stomatitis, making this the appropriate action. D. "I will continue to floss my teeth after each meal.": Flossing may irritate the oral mucosa further and worsen stomatitis, so clients should avoid it until the mucosa has healed.