LIUI 2 5.52 p Golab Roofing is considering the purchase of a crane that would cost $69,846, would have a useful life of 6 years, and would have no salvage value. The use of the crane would result in labor savings of $21,000 per year. The internal rate of return on the investment in the crane is closest to (Ignore income taxes.): Refer to Exhibit 12B-1 and Exhibit 12B-2, to determine the appropriate discount factor(s) using the tables provided. O 19% e 17% 20% a 0 o