Which of the Following Is an Example of a Passive

Multiple Choice

Which of the following is an example of a passive stability mechanism?

A) the reactor that shuts itself down past a certain temperature due to thermal expansion of the control rods
B) several layers of containment that separate the core from safe zones
C) the application of materials that allow higher neutron emission at higher temperatures
D) the use of pressurized containment buildings that can be tested for leaks
E) none of the above