use excel functions please

4 There are three alternatives in a productivity project . Alternative A involves the use of robots, B of modular fixtures, and C of an upgraded machine Details of each alternative are given below Alternative A Alternative B Alternative C First Cost $3,600 $6,000 $8,400 Annual Benefits $1,990 $2,680 $3,200 Useful Life (years) 3 Calculate the Payback Period for each alternative and determine the alternative that should be selected based on your calculations