please answer asap

Your colleague has calculated the depreciation schedule for a new computer using five different methods, and has given them to you for your consideration (in the table below). However, he forgot to tell you which depreciation methods he used to calculate those schedules, and merely labelled them "A", "B", "C", "D" and " E ". The values in the table below are the annual depreciation charges (they are not the remaining book value) for the computer using the various methods he chose. Identify the depreciation methods and depreciation rate (where applicable; put N/A if not applicable) used to arrive at the schedules in columns A, B, C, D and E. And calculate the values for year 5 and 6 . Note that the estimated salvage value of the equipment at the end of its 6-year useful life is $30,000. Please make sure that BV doesn't go below salvage value. Notes: CCA denotes capital cost allowance; DB denotes declining balance; SOYD denotes sum-of-the-years digits; SL denotes straight line; DDB denotes double declining balance. *Please make sure that BV doesn't go below salvage value. *Please make sure that BV doesn't go below salvage value