The Nurse Is Assessing a Patient Who Has a Chest $2 \mathrm{~cm}$

The nurse is assessing a patient who has a chest tube in place for the treatment of a pneumothorax. The nurse observes that the water level in the water seal rises and falls in rhythm with the patients respirations. How should the nurse best respond to this assessment finding?

A) Gently reinsert the chest tube 1 to $2 \mathrm{~cm}$ and observe if the water level stabilizes.
B) Inform the physician promptly that there is in imminent leak in the drainage system.
C) Encourage the patient to do deep breathing and coughing exercises.
D) Document that the chest drainage system is operating as it is intended.