a. Based on your experience, you think the unit sales, variable cost, and fixed cost projections given here are probably accurate to within 10%. What are the upper and lower bounds for these projections? What is the base-case NPV? What are the best-case and worst-case scenarios? (Negative answers should be indicated by a minus sign. Do not round intermediate calculations. Round the final NPV answers to 2 decimal places. Omit $ sign in your response.) Scenario Base Best Worst Unit Sales Variable Cost $ Fixed Costs $ NPY $ $ $ b. Evaluate the sensitivity of your base-case NPV to changes in fixed costs. (Negative answers should be indicated by a minus sign. Do not round intermediate calculations. Round the final answer to 3 decimal places. Omit $ sign in your response.) ANPV/AFC $ c. What is the cash break-even level of output for this project (ignoring taxes)? (Round the final answers to the nearest whole unit.) Cash break-even units d-1. What is the accounting break-even level of output for this project? (Round the final answers to the nearest whole unit.) Accounting break-even units d-2. What is the degree of operating leverage at the accounting break-even point? (Round the final answer to 4 decimal places.) Degree of operating leverage