An investment project provides cash inflows of $800 per year for 12 years. a. What is the project payback period if the initial cost is $2,400 ? b. What is the project payback period if the initial cost is $4,560 ? Payback period 5.70 years 5.76 years 5.42 years 5.81 years c. What is the project payback period if the initial cost is $10,400