The food compartment of a refrigerator is maintained at 5°C by removing heat from it at a rate of 19800 kJ/hr. If the required power input to the refrigerator is 1.5 kW, the coefficient of performance (COP) of the refrigerator is:
Select one:
a. 3.33
b. 3.67
c. 0.27
d. 1.67