A nurse is reinforcing teaching with a client who has stomatitis. Which of the following instructions should the nurse include in the teaching?

Stomatitis is an inflammation of the oral mucosa, which can cause pain, discomfort, and difficulty eating. To manage stomatitis, clients should consume soft, bland foods that are easy to chew and swallow, such as cooked vegetables, mashed potatoes, and oatmeal. Acidic, spicy, or crunchy foods should be avoided. Using lemon glycerin swabs can irritate the oral mucosa, so they should not be used. Mouthwashes containing alcohol can cause further irritation, so they should also be avoided. Eating foods high in vitamin B12 can be helpful for preventing stomatitis, but it is not an appropriate intervention for managing an existing case of stomatitis.