An asset for drilling was purchased and placed in service by a petroleum production company. Its cost basis is $70,000, and it has an estimated MV of $12,000 at the end of an estimated useful life of 12 years. Compute the depreciation amount in the fourth year and the BV at the end of the fifth year of life by each of these methods: a. The SL method. b. The 200% DB method with switchover to SL. c. The GDS. d. The ADS. Click the icon to view the partial listing of depreciable assets used in business. Click the icon to view the GDS Recovery Rates (rk). a. Using the SL method the depreciation amount in the fourth year is $ 4,833. (Round to the nearest dollar.) Using the SL method the BV at the end of the fifth year of life is $ 45834 . (Round to the nearest dollar.) b. Using the 200% DB method the depreciation amount in the fourth year is $ 58000. (Round to the nearest dollar.)