A plant asset was purchased on January $1$ for $$59000$ with an estimated salvage value of $$9000$ at the end of its useful life. The current

year's Depreciation Expense is $$5000$ calculated on the straight$-$line basis and the balance of the Accumulated Depreciation account at

the end of the year is $$30000.$ The remaining useful life of the plant asset is

$10\mathrm{.}0$ years.

$11\mathrm{.}8$ years.

$4\mathrm{.}0$ years.

$6\mathrm{.}0$ years.