A plant asset was purchased on January 1 for $55600 with an estimated salvage value of $15000 at the end of its useful life. The current year's depreciation expense is $2900 calculated on the straight-line basis and the balance of the Accumulated Depreciation account at the end of the year is $17400. The remaining useful life of the plant asset is

19 years.

14 years.

6 years.

8 years.