Marks 23 A depreciable asset with a cost of $42,500 has a residual value of $2.500 and a useful life of 8 years Total estimated units of output are 80.000. In year one. 5.200 units were produced Under the straight-line method and the units-of-production (activity) method the depreciation expense for year one would be Select one a Straight-line Units-of-activity S5,000.00 $2,600.00 O. Straight-line Units-of-activity $5,000.00 52,762.50 c. Straight-line Units-of-activity $5,312.50 $2,600.00 Od Straight-line Units-of-activity $5,312.50 $2.762.50 Notes + 2 Marks A machine has a useful life of 5 years and a residual value of $10,000. Its accumulated depreciation is $30,000 at the end of its second year of operation. What is the machine's original cost? Select one: a. S160,000 O b. $140,000 O c. $ 85,000 O d. $75,000 Notes (+