A refrigerator is removing heat from a cold medium at 3C at a rate of 7200 kJ/h

Question:

A refrigerator is removing heat from a cold medium at 3°C at a rate of 7200 kJ/h and rejecting the waste heat to a medium at 30°C. If the coefficient of performance of the refrigerator is 2, the power consumed by the refrigerator is
(a) 0.1 kW
(b) 0.5 kW
(c) 1.0 kW
(d) 2.0 kW
(e) 5.0 kW