A Steam Power Plant with an Efficiency of 65% of the Maximum

A steam power plant with an efficiency of 65% of the maximum thermodynamic efficiency operates between 250º C and 40ºC.How much heat is rejected to the cold reservoir in doing 1.0 kJ of work?

A) 3.8 kJ
B) 0.83 kJ
C) 2.8 kJ
D) 1.8 kJ
E) 0.67 kJ