When the Patient with Sleep Apnea Says,"I'm Not Wearing That

When the patient with sleep apnea says,"I'm not wearing that silly mask.I look like something out of Star Wars." The nurse reminds the patient that the mask:

A) Increases oxygen intake.
B) Stimulates regular respirations.
C) Sounds an alarm when the oxygen concentration drops.
D) Uses positive pressure to keep the airway open.