When using carbon dioxide to fight a fire on a bulkhead, the CO2 should be applied ____________.

A
first to the bottom of the flaming area, sweeping from side to side, and following the flames upward
B
in a circular motion from the middle of the bulkhead outward
C
to the top of the flaming area, sweeping from side to side, and working toward the bottom
D
in an up-and-down motion from one side of the bulkhead to the other
E