A 51-year-old female complains of chest pain and increasing difficulty breathing. She has a large caliber gunshot wound to her right chest wall, fourth intercostal space on the anterior axillary line. You auscultate absent breath sounds on the right side. Her vital signs are P 112, R 22, BP 104/90, and SpO2 is 91% on room air. You should suspect:
a) Tension pneumothorax
b) Hemothorax
c) Cardiac tamponade
d) Simple pneumothorax