Questions a and b in photo below, also please explain steps

Buhler Industries is a farm implement manufacturer Management is currently evaluating a proposal to build a plant that will manufacture lightweight tractors. Buhler plans to use a cost of capital of 12% to evaluate this project. Based on extensive research, it has prepared the following incomplete incremental free cash flow projections (in millions of dollars): Free Cash Flow ($000,000s) Year 0 Years 19 Year 10 Revenues 11600 116.00 Manufacturing expenses (other than depreciation) - 32,00 - 32,00 - Marketing expenses - 11.00 - 11.00 - CCA 7 7 = EBIT '7 '7 Taxes (35%) 9 9 = Unlevered net income 7 9 + CCA 7 7 Increases in net working capital 5,00 5,00 = Unlevered net income '? ? + CCA 7 ? - Increases in net working capital - 5.00 - 5.00 - Capital expenditures - 154.00 + Continuation value 11.00 = Free cash flow 154.00 ? 27 The relevant CCA rate for the capital expenditures is 15%. Assume assets are never sold, a. For this base-case scenario. what is the NPV of the plant to manufacture lightweight trucks? b. Based on input from the marketing department, Buhler is uncertain about its revenue forecast. In particular, management would like to examine the sensitivity of the NPVto the revenue assumptions. What is the NPV of this project if revenues are 10% higher than forecast? What is the NPV of this project if revenues are 10% lower than forecast