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The coefficient of performance of Electrolux refrigerator is the ratio of

A. Heat supplied by the gas burner to the heat absorbed by the evaporator

B. Heat absorbed by the evaporator to the heat supplied by the gas burner

C. Heat supplied by the gas burner minus the heat absorbed by the evaporator to the heat supplied by the gas burner

D. Heat absorbed by the evaporator minus the heat supplied by the gas burner to the heat absorbed by the evaporator

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