$12-15$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 answer.