An asset for drilling was purchased and placed in service by a petroleum production company. Its cost basis is $60,000 and it has an estimated market value of $12,000 at the end of an estimated useful life of 14 years. Compute the depreciation amount in the third year and Book Value at the end of the fifth year of life by each of these methods: a Straight-Line Method b Double Declining Balance Method c Sum-of-Years-Digits Method. please show work