We are evaluating a project that costs $838,000, has a life of seven years, and has no salvage value. Assume that depreciation is straight-line to zero over the life of the project. Sales are projected at 136,000 units per year. Price per unit is $38, variable cost per unit is $24, and fixed costs are $838,838 per year. The tax rate is 25 percent, and we require a return of 12 percent on this project. The projections given for price, quantity, variable costs, and fixed costs are all accurate to within +/18 percent. a. Calculate the best-case NPV. b. Calculate the worst-case NPV