As a cost accountant for San Francisco Cannery, you have been approached by Phil Perriman, canning room supervisor, about the 2017 costs charged to his department. In particular he is concerned about the line item "depreciation." Perriman is very proud of the excellent condition of his canning room equipment. He has always been vigilant about keeping all equipment serviced and well oiled. He is sure that the huge charge to depreciation is a mistake; it does not at all reflect the cost of minimal wear and tear that the machines have experienced over the last year. He believes that the charge should be considerably lower. San Francisco depreciates this and similar assets using double-declining-balance depreciation. Perriman has also pointed out that if you used straight-line depreciation the charge to his department would not be so great. Write a memo to Perriman to clear up his misunderstanding of the term "depreciation." Included in your memo a discussion of the matching principle as it applies to depreciation and its impact on the income statement