A nursing assistant is providing oral care to an unconscious resident. Which of the following is a guideline for the nursing assistant to follow during this procedure? a. Position the resident to one side to prevent aspiration of oral fluids. b. Use a soft-bristled toothbrush and fluoride toothpaste. c. Administer oral care every other day to prevent agitation of the resident. d. Use a lemon-flavored mouthwash to freshen the resident's breath.