In what way is a thermocouple fire warning system different from a thermal switch system?
A) Thermocouple Systems Use Electronic Sensors, While Thermal Switch Systems Use Mechanical Switches
B) Thermocouple Systems Respond to Rate-of-Temperature Rise, While Thermal Switch Systems Respond to Absolute Temperature
C) Thermocouple Systems Are Passive Detectors, While Thermal Switch Systems Are Active Detectors
D) There is No Difference Between Them