Your Paramedic Partner Has Applied Continuous Positive Airway Pressure (CPAP)

Your paramedic partner has applied continuous positive airway pressure (CPAP) to a patient in respiratory distress from congestive heart failure (CHF) . As an EMT, you realize that this should benefit the patient by:

A) reinflating portions of the lung that have collapsed.
B) causing the diaphragm to relax during inspiration.
C) removing air from the lungs during exhalation.
D) forcing fluid in the lungs back into the bloodstream.