Question Content Area Equipment with a cost of $86,480, an estimated residual value of $6,425, and an estimated life of 13 years was depreciated by the straight-line method for 7 years. Due to obsolescence, it was determined that the remaining useful life should be shortened by 5 years and the residual value changed to zero. The depreciation expense for the current and future years is

a.$43,373.46

b.$43,106.54

c.$3,336.42

d.$3,614.46