Golab Roofing is considering the purchase of a crane that would cost $69,739, would have a useful life of 9 years, and would have no salvage value. The use of the crane would result in labor savings of $14,100 per year. The internal rate of return on the investment in the crane is closest to (Ignore income taxes.): Table: Present value of a lump sum 14% 13% 15%