Which Statement About the Mechanics of Ventilation in Humans Is

Which statement about the mechanics of ventilation in humans is true?

A) If the pleural cavity is punctured, the lung will overinflate.
B) As the diaphragm contracts, air is expelled from the respiratory system.
C) As the diaphragm contracts, pressure within the pleural cavity 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 cavity between breaths.