Which choice correctly describes what happens during heating?

some of the energy in the system with more thermal energy will go into the system with less thermal energy, regardless of the temperatures of the systems.

if two systems are at different temperatures, energy will leave the system with greater thermal energy and go into the system with less thermal energy.

some of the energy in the system with less thermal energy will go into the system with more thermal energy, regardless of the temperatures of the systems.

if two systems are at different temperatures, energy will leave the system with less thermal energy and go into the system with greater thermal energy.