The charge nurse observes a new nurse demonstrate the administration of two different liquid medications through a gastrostomy tube used for continuous feedings Which action(s) should the charge nurse take? (Select all that apply)

Advise the nurse to use the plunger when giving medications.

Encourage the nurse to flush the tube with more water.

Confirm that the nurse determined the amount of gastric residual.

Instruct the nurse to administer each medication separately.

Add the liquid volumes when documenting fluid intake.