12-15 REPLACEMENT CHAIN Rini Airlines is considering two alternative planes. Plane A has an expected life of 5 years, has an after-tax cost of $95 million, and will produce after-tax cash flows of $35 million per year. Plane B has a life of 10 years, has an after-tax cost of $112 million, and will produce after-tax cash flows of $25 million per year. Rini plans to serve the route for 10 years. The company's WACC is 9%. If Rini needs to purchase a new Plane A, the after-tax cost will be $105 million, but cash inflows will remain the same. Should Rini acquire Plane A or Plane B? Explain your