please provid the steps

20. You have been asked to evaluate an infinitely-lived project. Sales in the first year are projected to be $100. Costs are projected at $50. There is no depreciation, and the tax rate is 30%. The real required return is 10%. The inflation rate is projected to be 8%. Sales and costs will increase at the rate of inflation. The project costs $300. What is the NPV? A) $142.03. B) $36.36. C) $71.72. D) $24.07