What is the key drawback of using gaseous extinguishing agents, such as carbon dioxide, for extinguishing a fire?

a$.$ The displacement of oxygen can also have a suffocating effect on the people in the vicinity.

b$.$ All answers are correct.

c$.$ The fire extinguishing process sharply cools the ambient air.

d$.$ The unused gaseous extinguishing agents are harmful to the environment.

Clear my choice