After a Healthy Newborn Takes Its First Breath

Multiple Choice

After a healthy newborn takes its first breath,

A) the pressure in the thoracic cavity remains low.
B) the rib cage returns to its fully compressed state.
C) the diaphragm and the external intercostal muscles stay contracted.
D) the alveoli stay open because of the presence of surfactant.
E) the compliance of the lungs gradually decreases.