Ventilation That Causes Heat, Smoke, and Fire to Be Discharged

Ventilation that causes heat, smoke, and fire to be discharged through wall openings below the highest point of the building creates danger because:

A) multiple ventilation points will be created from the openings.
B) oxygen levels will be increased for the upper levels of the fire.
C) fire streams will be unable to reach the higher levels of the fire.
D) rising gases will ignite portions of the building above exhaust point.