Whitestone Products is considering a new project whose data are shown below. The required equipment has a 3-year tax life, and the accelerated rates for such property are 33.33%, 44.45%, 14.81%, and 7.41% for Years 1 through 4. Revenues and other operating costs are expected to be constant over the project's 10-year expected operating life. What is the project's Year 4 cash flow? Equipment cost (depreciable basis) $70,000 Sales revenues, each year $42,500 Operating costs (excl. deprec.) $25,000 Tax rate 25.0% a. $15,900 b. $14,422 c. $15,143 d. $13,016 e. $13,701