Which of the Following Statements Concerning the Pleura Is Correct

Multiple Choice

Which of the following statements concerning the pleura is correct?

A) The pleural fluid between the the parietal pleura and visceral pleura ensure that as the thorax expands, the lungs expand as well.
B) The parietal pleura separates from the visceral pleura as the thorax expands.
C) The fluid secreted by the pleural membranes compresses the lungs causing them to collapse.
D) All of the choices are correct.