Which of the Following Statements Describes "Engineered Control

Which of the following statements describes "engineered control"?

A) A technique used to provide optimum control for quality testing of patient specimens
B) Represents an alarm systems that alerts everyone in the laboratory that there is a fire in the building
C) Safety equipment that isolates or removes the bloodborne pathogen hazard from the workplace and represents the preferred method for controlling hazards
D) Safety equipment that isolates or removes only radiation hazard from the workplace and represents the preferred method for controlling radioactive hazards