The White Swan Talc Company paid $120,000 for mining equipment for a small talc mine. The mining engineer's report indicates the mine contains 40,000 cubic meters of commercial-quality talc. The company plans to mine all the talc in the next 5 years as follows: At the end of 5 years, the mine will be exhausted and the mining equipment will be worth less. The company accountant must now decide whether to use sum-of-years'-digits depreciation or unit-of-production depreciation. The company co