Two kilograms of steam enter a turbine each second at 600° C and 4 MPa and leave as saturated vapor at 20 kPa while 100 kJ/s of heat leave the turbine. The surroundings are at 25° C. The entropy production is nearest:
(A) 1.42 kJ/K ∙ s
(B) 1.08 kJ/K ∙ s
(C) 0.63 kJ/K ∙ s
(D) 0.34 kJ/K ∙ s