Which of the following is not an internal ulcer?

A) Gastric ulcer
B) Duodenal ulcer
C) Decubitus ulcer
D) Gastrojejunal ulcer

You are having lunch with friends at a local restaurant. Suddenly, you notice someone at the table next to yours putting his hands up to his throat. He has a fearful look on his face. Which of the following is the appropriate first action to take?

A) Ask the person if he or she is choking
B) Perform CPR
C) Call 911
D) Perform the Heimlich maneuver
E) Place the person in a supine position