Nuclear power plants output energy to the electrical grid at a certain rate W_out/t where W_out is the output energy over a certain period of time t. Every such plant also has a certain efficiency e. Consider three nuclear plants, A, B, C, with the following values for the efficiency and energy output rate:

Plant	Efficiency (e)	Output energy rate (Wout/t)
A	33%	1.3 GW
B	36%	1.7 GW
C	30%	997 MW

Over the course of running for one hour, which plant produces the smallest amount of waste heat?