Alpha Corp. is considering adding a new product to its lineup and have estimated the following: Year o cash flow: -$14,500 Year 1 cash flow: $2,200 Year 2 cash flow: $4,800 Year 3 cash flow: $6,500 Year 4 cash flow: $7,500 Alpha Corp.'s estimated WACC is 10%. What is the payback period of the project? a. 1.6 years b. 3.7 years c. 3.1 years d. 2.6 years