What wii be the required power in kW, if a cooling rate of 1.5 kW is desired?

Question

An ideal refrigenrator based on reversed Carnot cycle works between -23⁰C and + 27⁰C. What wii be the required power in kW, if a cooling rate of 1.5 kW is desired?                    

(a) 0.25 kW                         (b) 0.3 kW

(c) 3.25 kW                          (d) 7.5 kW