Which statement characterizes the use of incinerators? 

A)  They are inexpensive to operate and maintain. 
B)  They release toxic substances in fly ash and bottom ash. 
C)  They create many low-paying jobs. 
D)  They are inexpensive to build.

Incinerators

Incinerators are devices or facilities used to burn waste materials at high temperatures, reducing their volume and sometimes generating energy.

Toxic Substances

Chemicals or mixtures that can cause harm or danger to organisms, the environment, or both when released or exposed in significant quantities.

Fly Ash

A fine powder that is a byproduct of burning pulverized coal in electric generation power plants, which can be used as a pozzolan in concrete production.