Which of the Following Chest Radiograph Findings Would Confirm the Presence

Which of the following chest radiograph findings would confirm the presence of PIE?
1) Mediastinal shift to the unaffected side
2) Air below the diaphragms
3) Lung hyperinflation
4) Fine, bubbly appearance of the lungs

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