Modern Artifacts can produce keepsakes that will be sold for $130 each. Nondepreciation fixed costs are $2,000 per year, and variable costs are $110 per unit. The initial investment of $5,500 will be depreciated straight-line over its usefut life of five years to a final value of zero, and the discount rate is 10%. a. What is the accounting break-even level of sales if the firm pays no taxes? b. What is the NPV break-even level of sales if the firm pays no taxes? Note: Do not round intermediate calculations. Round your final answer to the nearest whole number. c. What is the accounting break-even level of sales if the firm's tax rate is 20% ? d. What is the NPV break-even level of sales if the firm's tax rate is 20% ? Note: Do not round intermediate calculations. Round your final answer to the nearest whole number. e. What is the degree of operating leverage for the firm for the NPV break-even points when the tax rate is 0\% and when the tax rate is 20% ? Note: Round intermediate calculation to the nearest whole number. Round your answers to 2 decimal places