A Patient Receiving Head and Neck Radiation and Systemic Chemotherapy

A patient receiving head and neck radiation and systemic chemotherapy has ulcerations over the oral mucosa and tongue and thick, ropey saliva. An appropriate intervention for the nurse to teach the patient is to

A) remove food debris from the teeth and oral mucosa with a stiff toothbrush.
B) use cotton-tipped applicators dipped in hydrogen peroxide to clean the teeth.
C) gargle and rinse the mouth several times a day with an antiseptic mouthwash.
D) rinse the mouth before and after each meal and at bedtime with a saline solution.