One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is ().
A.
the "snow" which is sometimes discharged along with the gas is toxic
B.
prolonged exposure to high concentrations of C0 2 gas causes suffocation
C.
rapid dissipation of the C0 2 vapor
D.
the C0 2 gas is lighter than air and a large amount is required to extinguisha fire near the deck