10. The working temperatures in the evaporator and condenser coils of a refrigerator are – 300C and 320 C respectively. If the actual refrigerator has a COP of 0.75 of the maximum, the required power input for a refrigerating effect of 5 kW is nearly,
(a) 1.7 kW (b)2.94 kW
(c)3.92 kW (d)4.0 kW