Which of the Following Describes the Action of a Gravity

Multiple Choice

Which of the following describes the action of a gravity air displacement sterilizer?

A) Pressurized steam pushes air out of the sterilizing chamber, and high-pressure steam sterilizes the instruments.
B) Air is removed from the sterilizing chamber through a vacuum, and steam replaces the air to sterilize the instruments.
C) Pressurized gas is pushed into the chamber to circulate with high levels of humidity, which sterilizes the instruments.
D) Instruments are immersed in fluid, followed by humidified air that circulates at extremely high temperatures.