Jess and Her Mother Are at a Restaurant When They

Jess and her mother are at a restaurant when they see a woman at a nearby table violently coughing after choking on food. What should they do?

A) One of them should call 911 while the other performs abdominal thrusts.
B) One of them should pat the woman's back while the other raises the woman's arms above her head.
C) They should instruct the woman on how to lean over her chair and expel the object.
D) They should do nothing as long as the woman is able to cough.