Equipment was purchased at the beginning of 2015 for $206,000. At the time of its purchase, the equipment was estimated to have a useful life of five years and a salvage value of $21,000. The equipment was depreciated using the straight-line method of depreciation through 2017. At the beginning of 2018, the estimate of useful life was revised to a TOTAL life of eight years (to 1/1/23) and the expected salvage value was changed to $15,000. The amount to be recorded for depreciation for 2018, reflecting these changes in estimates, is: Select one: a. $16,000 b. $19,800 C $19,000 d. $23,400 e. $26,400