Your Patient Has RDS

Your patient has RDS. What clinical manifestations are associated with the more negative intrapleural pressures needed during inspiration?
1) See-saw breathing movement
2) Vesicular breath sounds
3) Pulmonary edema
4) Dependent thoracic areas are cyanotic

A) 1, 4
B) 2, 4
C) 1, 2, 3
D) 1, 2, 3, 4