While working in a factory, Terri hears a scream and finds her coworker with a severely injured arm. What should Terri do first to aid her coworker?
A. Terri should check the surroundings for possible dangers.
B. Terri should stem the blood flow by applying pressure to the
wound.
C. Terri should place her coworker in a relaxed recovery position.
D. Terri should check her coworker's vital signs for irregularities.