Munoz Alrine Company Is considering expanding its territory. The company has the opportunity to purchase one of two dtferent used. alrplanes. The first alrplane is expected to cost $17,000,000; It will enable the company to increase its annual cash inflow by $6,800,000 per year. The plane is expected to have a useful iffe of five years and no salvage value. The second plane costs $39.060.000 : it will enable the company to increase annual cash flow by $9,300,000 per year. This plane has an elght-year useful ife and a zero salvage value. Required a. Determine the payback period for each investment alternative and identify the alternative Munoz should accept if the decision is based on the payback appraach. (Round your answers to 1 decimal place)