DYI Construction Co. is considering a new inventory system that will cost $650,000. The system is expected to generate positive cash flows over the next four years in the amounts of $350,000 in year one, $325,000 in year two, $150,000 in year three, and $180,000 in year four. DYI's required rate of return is 9%. What is the internal rate of return of this project?
a) 11.57%
b) 15.13%
c) 10.87%
d) 23.85%