Refer to the Figure Showing the Respiratory System in Birds

Refer to the figure showing the respiratory system in birds. In the respiratory cycle of birds, air flows

A) through the trachea, to the bronchi, to the posterior air sacs, and then into the parabronchi.
B) through the bronchi, to the trachea, to the parabronchi, and then into the posterior air sacs.
C) through the trachea, to the parabronchi, to the bronchi, and then into the posterior air sacs.
D) through the trachea, to the parabronchi, to the posterior air sacs, and then into the bronchi.
E) through the trachea, to the posterior air sacs, to the parabronchi, and then to the parabronchi.