In detail show and explain all steps

Modified problem &20 from page 468 of the textbook, which now reads "Consider the following data on an asset: Cost of asset, P Useful life, N Salvage value, S $119,000 5 years $20,000 Compute the annual depreciation amounts using: (a) The Straight-Line (SL) depreciation method, (b) Declining Balance (DB) method (with switching to SL if required), and (c) Sum-Of-the-Years' Digits (SOYD) method. If the salvage value changed to $5,000, and the asset produced 1000 product units in the first year out of the planned total of 10000 for the five year life, calculate the depreciation amount for the first year, using: (d) Double Declining Balance (DDB), and (e) Units of Production (UP) method