Hot work is potentially hazardous because... Select one: a. It may act as a source of ignition in any plant in which flammable materials are handled. b. All the answers are incorrect. c. It may act as a source of ignition in any plant in which flammable materials are Handled and it may act as a cause of fires in all processes, regard- less of whether flammable materials are present. d. It may act as a cause of fires in all processes, regard- less of whether flammable materials are present