An electric motor of 5 kW is subjected to a braking test for 1 hour. The heat generated by the frictional forces in the process is transferred the surroundings at 200C . The resulting entropy change will be
(a) 22.1 kJ/K (b) 30.2 kJ/K (c) 61.4 kJ/K (d) 82.1 kJ/K