7) What is the payback period for a company's new project if its initial after-tax cost is $4,400,000 and it is expected to provide after-tax operating cash inflows of $1,800,000 in year 1, $1,900,000 in year 2, $700,000 in year 3, and $1,800,000 in year 4? 5 years 3 years ? 2 years 4 years