Modern Artifacts can produce keepsakes that will be sold for $170 each. Nondepreciation fixed costs are $2,800 per year, and variable costs are $150 per unit. The initial investment of 57,500 will be depreciated straight-line over its useful 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? (Do not round intermediate calculations. Round your final answer to the nearest whole number.) c. What is the accounting break even level of sales of 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%? (Do not round intermediate calculations. Round your final answer to the nearest whole number) Accounting break even level of sales b. NPV break even level of sales Accounting break even level of sales d NPV break even level of sales