Charles Enterprises got into the drone manufacturing business. They anticipate the following cash flows for their project. Year Costs $ Savings $ 0 1 2 3 4 5 6 50,000 20,000 20,000 20,000 20,000 50,000 15,000 0 35,000 40,000 45,000 50,000 50,000 25,000 60,000 The company invests their money at projects that bring them a rate of 18% per year. When they want to take loans, they receive loans with a rate of 12% per year. a) How many possible values of i* could this project have? Why? b) Determine the external rate of return using the MIRR method. Show your steps