Your 48 Year Old Coworker Says She Has Indigestion and Nausea

Your 48 year old coworker says she has indigestion and nausea, and feels a "burning sensation" in her chest. You note that she is pale, sweaty, and seems very agitated. You should

A) have another coworker call 9-1-1 and ask for ALS.
B) have her lie on the floor with her feet slightly elevated.
C) have her take several deep breaths and reassess her vital signs.
D) have her take an over-the-counter antacid and a glass of water.