Which of the Following Statements About Firefighters' Smoke Control Stations

Which of the following statements about firefighters' smoke control stations is MOST accurate?

A) All smoke control equipment must be fully automated to prevent manual shutdown.
B) The firefighters' smoke control station must be accessible by all building occupants at all times.
C) Each piece of smoke control equipment should be controlled individually, rather then by zones.
D) The firefighters' smoke control station should contain a building diagram indicating the location of smoke control equipment.