The nurse discusses with the 4-year-old child and parents the plan of care that will be implemented when the child returns from the throat surgery. Which of the following interventions should the nurse emphasize（）
A. Need for frequent coughing.
B. Use of acetylsalicylic acid for pain, as needed.
C. Ability to have ice cream right after surgery.
D. Use of sips of clear liquids when awake and alert.