3. You are evaluating a project that costs $1,500,000; has a six-year life. Assume that depreciation is straight line to zero over the life of the project. Sales are projected at 81,000 units per year. Price per unit is $34.50; variable cost per unit is $20.50; and fixed costs are $700,000 per year. The tax rate is 35%, and you require an 12% return on this project. a. Calculate the base-case cash flow and NPV. b. What is the sensitivity of NPV to a 1000 unit decrease in projected sales