According to , heat flows naturally from a hot object to a cold object but will not flow spontaneously from a cold object to a hot object.

It is important to emphasize that this statement of the 2nd law applies to the spontaneous flow of heat from hot to cold. It is possible, of course, to make a cool object in a warm place cooler - this is what a refrigerator does - but this involves the input of some external energy. As such, the flow of heat is not spontaneous in this .

My answer is opptionc, just check with anyone else