The nursing instructor is supervising a nursing student feeding a client at risk for aspiration. Which action by the nursing student requires follow-up by the nursing instructor? Select all that apply.

A Instructs the client to tilt the head backward when drinking. D Positions the client upright for 30-60 minutes after a meal. C Provides rest periods as needed during the meal. E Positions the head of the bed at a 45-degree angle during the meal. B Reminds the client to assume a chin-down position.