Your firm is considering a project with a five-year life and an initial cost of $120,000. The discount rate for the project is 12%. The firm expects to sell 2,100 units a year. The cash flow per unit is $20. The firm will have the option to abandon this project after three years at which time it expects it could sell the project for $50,000. At what level of sales should the firm be willing to abandon this project?
A. 420 units
B. 1,041 units
C. 1,479 units
D. 1,618 units
E. 2,500 units