Equipment with a Cost of $160,000,an Estimated Residual Value of $40,000,and

Equipment with a cost of $160,000,an estimated residual value of $40,000,and an estimated life of 15 years was depreciated by the straight-line method for 4 years.Due to obsolescence,it was determined that the useful life should be shortened by 3 years and the residual value changed to zero.The depreciation expense for the current and future years is

A) $16,000
B) $11,636
C) $11,000
D) $8,000