Pantheon Company is purchasing a new equipment that will require an investment of $135,000. The equipment is estimated to generate cash inflows of $25,000 the first year, $20,000 the second year, and $15,000 each year thereafter for ten more years. What is the payback period? A. 8 years B. 8.75 years C. 8.33 years D. 6.8 years