The Star Corporation has been presented with an investment opportunity which will yield cash flows of $30,000 in Year 1, $30,000 in Year 2, $20,000 in year 3. $15,000 in year 4, $10,000 in year 5, $8,000 in year 6. The initial cost of the firm is $100,000 and firm's cost of capital is 10 percent. What is the payback period for this investment? O 6.29 years 3.86 years 4.50 years 7.35 years 5.83 years