A Correct Statement of the Second Law of Thermodynamics Is

Multiple Choice

A correct statement of the Second Law of Thermodynamics is

A) the random motion of gas molecules will be decreased if energy is added to a gas.
B) there is no process that can make heat flow from a cold object to a hot object.
C) no heat engine can have an efficiency greater than 30%.
D) heat will not flow spontaneously from a cold object to a hot object.