ABC Company is adding a new product line that will require an investment of $1500000. The product line is estimated to generate cash inflows of $300,000 the first year, $250000 the second year, and $200,000 each year thereafter for ten more years. What is the payback period?
A: 7.25 years
B: 6.00 years
C: 2.73 years
D: 6.75 years