A 63-year-old male has an irregular three-inch laceration across his right forearm. He tells you he feels nauseated and light-headed. You observe a steady flow of dark, red blood. You are unable to stop the flow with direct pressure. You should next:
a) Apply a tourniquet proximal to the wound
b) Elevate the arm above the heart
c) Pack the wound with sterile dressings
d) Apply pressure to the brachial artery