A nurse is instructing a family member who will be caring for a patient receiving enteral feedings after discharge to home. The nurse would emphasize:
a. Taping the gastrostomy tube so that it does not hang lower than the stomach.
b. Administering tube feedings while they are still cold from the refrigerator.
c. Mixing all medications together for administration at the same time.
d. Discarding unused opened refrigerated formula after 3 to 4 days.