A Carnot Engine Operates with a Cold Reservoir at a Temperature

Multiple Choice

A Carnot engine operates with a cold reservoir at a temperature of T_L = 400 K and a hot reservoir at a temperature of T_H = 500 K.What is the net entropy change as it goes through a complete cycle?

A) 0 J/K
B) 20 J/K
C) 80 J/K
D) 400 J/K
E) 500 J/K