How to do d and what is the answer to it?

Modern Artifacts can produce keepsakes that will be sold for $80 each. Nondepreciation fixed costs are $1, 700 per year, and variable costs are $60 per unit. The initial investment of $2,000 will be depreciated straight-line over its useful life of 5 years to a final value of zero, and the discount rate is 12%. a. What is the accounting break-even level of sales if the firm pays no taxes? Accounting break-even level of sales 105 units b. What is the NPV break-even level of sales if the firm pays no taxes? NPV break-even level of sales 113 units c. What is the accounting break-even level of sales if the firm's tax rate is 35%? A counting break-even level of sales 105 units d. What is the NPV break-even level of sales if the firm's tax rate is 35%? NPV break-even level of sales 108 units