In the Operation of a Steam- Electric Generating Plant, the Work

In the operation of a steam- electric generating plant, the work output [from thermal energy to work] occurs

A) in the condenser.
B) at the point where the energy from the furnace is transferred into the boiler.
C) at the point where the hot steam pushes against the turbine.
D) at the point where the fossil or other fuel is shipped into the plant area.
E) in the electric generators.