Jarett Motors is trying to decide whether it should keep its existing car washing machine or purchase a new one that has technological advantages (which translate into cost savings) over the existing machine. Information on each machine follows: Old machine New machine Original cost $9,000 $20,000 Accumulated depreciation 5,000 0 Annual cash operating costs 9,000 4,000 Current salvage value of old machine 2,000 Salvage value in 10 years 500 1,000 Remaining life 10 yrs Refer to Jarett Motors. The incremental cost to purchase the new machine is Select one: a. $11,000 b. $20,000 c. $13,000 d. $18,000