Rogers, Inc., is considering replacing a computer with a newer model. The following data has been collected: Old Computer New Computer Purchase price $4,250 $6,850 Accumulated Depreciation 1,800 0 Annual operating costs 1,500 1,250 If the old computer is replaced now, it can be sold for $1,000. Both the old computer's remaining useful life and the new computer's useful life is 6 years. Which of the following amounts is irrelevant to the replacement decision