A machine with a book value of $86,000 has an estimated five-year life. A proposal is offered to sell the old machine for $49,500 and replace it with a new machine at a cost of $60,500. The new machine has a five-year life with no residual value. The new machine would reduce annual direct labor costs from $12,000 to $7,900. This information has been collected in the Microsoft Excel Online file. Open the spreadsheet, perform the required analysis, and input your answers in the questions below. Open spreadsheet a. Prepare a differential analysis dated June 2 on whether to continue with the old machine (Alternative 1 ) or replace the old machine (Alternative 2). If an amount is zero, enter " 0 ". Use a minus sign to indicate costs, losses, or negative differential effect on income. b. Should the company continue with the old machine (Alternative 1 ) or replace the old machine (Alternative 2 )