The cycle works between 20C and 270C. The power required to run the system is

Question

 A refrigeration plant working on Carnot cycle is designed to take the load of 4 T of refrigeration.  The cycle works between 2⁰C and 27⁰C.  The power required to run the system is 

(a) 1.27 kW                    (b) 3.71 kW

(c) 5.71 kW                    (d) 7.27 kW