When Administering Continuous Positive Airway Pressure (CPAP) to a Patient

When administering continuous positive airway pressure (CPAP) to a patient, you would recognize that the patient is benefiting from the treatment when the:

A) patient states he is breathing easier.
B) heart rate increases from baseline by 10 percent.
C) blood pressure drops below 100 mmHg systolically.
D) patient can resume control of his airway.