Which of the Following Statements About the Mechanics of Ventilation

Which of the following statements about the mechanics of ventilation is false?

A) If the pleural cavity is punctured, the lung may collapse.
B) As the diaphragm relaxes, air is expelled from the respiratory system.
C) As the diaphragm relaxes, pressure within the pleural cavities increases.
D) Less energy is expended during the exhalation phase than during the inhalation phase.
E) There is a slight positive pressure within the pleural cavities between breaths.