The Levin tube and the Salem sump tube are used most commonly for stomach decompression. Which of the following statements about these tubes is true? A. Levin tubes have a blue "pigtail" that functions as an air vent.
B. These tubes are inserted as a sterile procedure.
C. The blue air vent should not be used for irrigation.
D. The Salem sump tube has a blue "pigtail" that functions as an air vent.
E. The Salem sump is preferred for stomach decompression.