A Chemical Plant Expansion cost $45 Million. Reactor yields were difficult to estimate so the design engineers were conservative; the reactor could not be easily enlarged later. When the plant was operating, which situation was most likely? a) There were few bottleneck removal projects, b) A number of bottleneck removal opportunities were identified with rates of return higher than the original project, and c) A number of bottleneck removal opportunities were identified with rates of return lower than the original project. (this question was discussed in the audio lectures)