The relationship between the straight-line and double-declining-balance method is that they D. Produce the same total depreciation over an asset's useful life.
While they do not produce the same depreciation every year, they will eventually depreciate an asset in the same way overtime.
What this means is that both methods will depreciate an asset by the same amount at the end of the asset's life. However, the depreciation amounts will vary by method on an annual basis.
In conclusion, option D is correct.
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