Required information [The following information applies to the questions displayed below] Three different companies each purchased trucks on January 1, 2018, for $68,000. Each truck was expected to last four years or 200,000 miles. Salvage value was estimated to be $6,000. All three trucks were driven 65,000 miles in 2018, 40,000 miles in 2019, 38,000 miles in 2020, and 60,000 miles in 2021. Each of the three companies earned $57,000 of cash revenue during each of the four years. Company A uses straight-line depreciation, company B uses double- declining-balance depreciation, and company C uses units-of-production depreciation. Answer each of the following questions. Ignore the effects of income taxes. Required a-1. Calculate the net income for 2018? (Round "Per Unit Cost" to 3 decimal places.) Net Income Company A Company B Company C