An increase in thermal energy leads to ___ A. a decrease in heat and a decrease in kinetic energy until a phase change occurs

B. a decrease in heat and a decrease in kinetic energy until a phase change occurs

C. an increase in heat and an increase in kinetic energy until a phase change occurs.

D. an increase in heat and a decrease in kinetic energy until a phase change occurs

Please give an explanation

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.