A project requires an initial investment of $600 and then provides a cash flow of $200 at the end of the first year, $300 at the end of the second year, $400 at the end of the third year, and $500 at the end of the fourth year. If the required rate of return is 8%, what is the approximate discounted payback period (assuming, for this calculation, an even flow of cash throughout each year)? O 2.25 years O 3.00 years 2.00 years 2.75 years 2.50 years