A charge nurse is teaching a group of nurses about fire safety. Which of the following statements by a nurse indicates an understanding of the teaching?

"I should attempt to extinguish a fire before activating the fire alarm."

"I should use an up-and-down sweeping motion when using a fire extinguisher."

"I should avoid removing the safety pin from the fire extinguisher during use."

"I should contain a fire by closing the doors and windows in all rooms."