Fun Will need high tech 3D printers on an ongoing basis. You are considering two models. Model one costs $10000 and is expected to run for 6 years. Model 2 costs $12000 and is expected to run for 9 years. The maintenance cost each year are $1200 for model 1 & $800 for model 2. After tax cash flows & the weighted average cost of capital is 5.22%. Answers to which model should the company choose to buy using the NPV calculation?