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Which of the following statement is correct according to Clausis statement of second law of thermodynamics?

A. It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature.

B. It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.

C. It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature by using refrigeration cycle.

D. None of the above

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