Which of the Following Statements About Smoke Control Is MOST

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

A) Most smoke management systems are ineffective if building occupants are sleeping or impaired.
B) The purpose of smoke control is to quickly remove smoke from and introduce fresh air into the fire area.
C) Smoke management systems are not activated until the structure has been evacuated and searched.
D) Smoke control is any effort to change pressure in spaces adjacent to the fire area to compartmentalize or exhaust smoke.