JKL Manufacturing purchased a new machine on January 1, 1995. Relevant information is as follows: (15 points) It is now the beginning of year 6 and the management reevaluated the estimates related to the machine. Required: Case Event Cost when acquired Estimated residual value Estimated useful life 10 years Accumulated depreciation at the end of year 5 (assume straight-line depreciation) 12,000 Compute the depreciation expense for year 6 under each of the following independent cases, always assuming straight line depreciation: A 8 C $36,000 12,000 The estimated total useful life is changed to 15 years, residual value is unchanged. The residual value is changed to $1,000; useful life unchanged. The estimated total useful life is changed to 7 years and the residual value is changed to $3,000.