A Rankine Cycle Has Efficiency of 19

A Rankine cycle has efficiency of 19.4%. The steam enters the turbine with enthalpy of 32.85 kJ/Kg while heat of water entering the boiler is 423.6 kJ/Kg.the work of the turbine is 560 kJ/ Kg. the pump work is

A) 3.5 kj/kg
B) 5 kj/kg
C) 6.5 kj/kg
D) 7 kj/kg