Which statement is true concerning depreciation?

$$ i$.$ Straight$-$line Depreciation is recognized evenly over the estimated useful life of the asset

$$ ii$.$ Declining balance method results in more depreciation expenses in the final year of the asset$$s life compared to the first year.

$$ iii.$$ Under the declining balance method, the salvage value is necessary to compute depreciation expenses for the first year of the asset$$s life.