Victor Mineli, the new controller of Carla Vista Co., has reviewed the expected useful lives and salvage values of selected depreciable asset categories at the beginning of 2021. Here are his findings: Category Date Historical Accum. Useful Life Years) Salvage Value of Asset Acquired cost Deprec. Original Proposed Original Proposed Building 1/1/2003 $829,000 $369,000 38 43 $50,000 $40,000 Machinery 1/1/2011 245,000 92,000 15,000 9,000 All assets were placed into service on their acquisition dates and are depreciated by the straight-line method. Carla Vista Co. uses a calendar year in preparing annual financial statements. Note that "Proposed" useful life is a revised estimate of total life, not remaining life. Enter all answers in whole dollar amounts without a $. If rounding is necessary, round to the nearest whole dollar (e.g., XXX). a. Using the original values, how much annual depreciation expense did Carla Vista recognize for the Building in 2020? $ 25 20 b. Assume that management has agreed to accept Victor's proposed useful life change for the Building, but decides to retain the original salvage value estimate. How much annual depreciation expense will Carla Vista recognize for the Building in 2021? $ c. Using the original values, how much annual depreciation expense did Carla Vista recognize for the Machinery in 2020? $ d. Assume that management has agreed to accept Victor's proposed useful life change for the Machinery, but decides to retain the original salvage value estimate. How much annual depreciation expense will Carla Vista recognize for the Machinery in 2021? $