What is the c.o.p. of the cycle?

Question

In a vapour compression refrigeration cycle following data are obtained?

         Enthalpy at suction to the compressor               : 180 kJ/kg

         Enthalpy at discharge from the compressor       : 210 kJ/kg

Enthalpy at exit from the   condenser                : 80 kJ/kg

What is the c.o.p. of the cycle?

(a) 5.53               (b) 4.53            (c) 3.33            (d) 2.33