General Motors has a weighted average cost of capital of 7%. GM is considering investing in a new plant that will save the company $30million over each of the first two years, and then $15 million each year thereafter, continuing indefinitely. If the investment is $150 million, what is the net present value (NPV) of the project? O $91.4 million O $73.1 million O $64.0 million $82.3 million