According to Clausis statement of second law of thermodynamics___________________?

A. heat can be transferred from low temperature to high temperature source if COP of process is more than unity

B. heat cant be transferred from low temperature source to high temperature source

C. all of the above

D. heat cant be transferred from low temperature to high temperature source without the aid of external energy

E. heat can be transferred for low temperature to high temperature source by using refrigeration cycle.

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